subject:(multiple input multiple output MIMO )

NSYSU

1. Su, Chih-Tseng. Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm.

Degree: Master, Communications Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807108-141209

► Multiple-input multiple-output (MIMO) is a well-known technique for efficiently increasing bandwidth utilization. However, the implementation of the MIMO receiver with a reasonable hardware cost is… (more)

Subjects/Keywords: Sphere Decoding; Multiple-Input Multiple-Output(MIMO)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Su, C. (2008). Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807108-141209

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Su, Chih-Tseng. “Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm.” 2008. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807108-141209.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Su, Chih-Tseng. “Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm.” 2008. Web. 19 Jan 2021.

Vancouver:

Su C. Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807108-141209.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Su C. Implementation of 4Ã4 MIMO Detector using K-Best Sphere Decoding Algorithm. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0807108-141209

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Wollongong

2. Liu, Tianle. On the effects of spreading sequences over MIMO-STS systems.

Degree: PhD, 2014, University of Wollongong

URL: ; https://ro.uow.edu.au/theses/4167

► This thesis conducted an investigation into how to select the promising spreading sequences over a Multiple Input Multiple Output (MIMO) system. The Multiple Access… (more)

▼ This thesis conducted an investigation into how to select the promising spreading sequences over a Multiple Input Multiple Output (MIMO) system. The Multiple Access Interference (MAI) effects, associated with spreading sequences pairs over Multiple Output Space-Time-Spreading (MIMO-STS) systems were analysed. In order to evaluate the spreading sequences over the MIMO-STS system, a test bed developed by Software Defined Radios (SDR) was needed. Towards this end, a SDR test bed was developed to evaluate the selected spreading code, in an attempt to mitigate against the MAI effects over 2×1 MIMO-STS systems. Results are first provided for MIMO-STS system and SISO system in the presence of MAI when using Gold codes, orthogonal Gold codes, original Walsh codes and modified Walsh codes. The results of the SDR test bed inferred that the “pairs” of spreading sequences are a crucial factor in order to select the most promising spreading code for MIMO systems. Motivated by the differences between Single Input Single Output (SISO) and MIMO systems, a new criterion for selecting promising spreading sequences in particular for MIMO-STS systems was proposed. In this study, more promising spreading sequences sets for MIMO systems were located by employing the proposed selection criteria, by selecting sequences with low cross-correlation in terms of pairs of sequences, rather than single sequences. The thesis concluded that the choice of spreading sequences pairs in a MIMO-STS system, in the presence of MAI sources, is an important factor to be considered. From this point onwards, some of the recently proposed spreading families were evaluated by the proposed criterion. The SDR test bed results revealed that, for some of the latest proposed spreading families, with modified or novel construction of the classic spreading codes, improved transmission properties for asynchronous transmissions can be achieved, when using the spreading sequences pairs selection criterion. This indicated that those viable constructions can be considered in any further combinatorial designs of spreading codes for MIMO-STS systems, in order to mitigate against MAI effects. The thesis finally provides some further considerations for future related work.

Subjects/Keywords: Sequences; MIMO; SDAR; MAI; Multiple Output Space-Time-Spreading; Multiple Input Multiple Output

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, T. (2014). On the effects of spreading sequences over MIMO-STS systems. (Doctoral Dissertation). University of Wollongong. Retrieved from ; https://ro.uow.edu.au/theses/4167

Chicago Manual of Style (16^th Edition):

Liu, Tianle. “On the effects of spreading sequences over MIMO-STS systems.” 2014. Doctoral Dissertation, University of Wollongong. Accessed January 19, 2021. ; https://ro.uow.edu.au/theses/4167.

MLA Handbook (7^th Edition):

Liu, Tianle. “On the effects of spreading sequences over MIMO-STS systems.” 2014. Web. 19 Jan 2021.

Vancouver:

Liu T. On the effects of spreading sequences over MIMO-STS systems. [Internet] [Doctoral dissertation]. University of Wollongong; 2014. [cited 2021 Jan 19]. Available from: ; https://ro.uow.edu.au/theses/4167.

Council of Science Editors:

Liu T. On the effects of spreading sequences over MIMO-STS systems. [Doctoral Dissertation]. University of Wollongong; 2014. Available from: ; https://ro.uow.edu.au/theses/4167

3. Suvikunnas, Pasi. Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications.

Degree: 2006, Helsinki University of Technology

URL: http://lib.tkk.fi/Diss/2006/isbn9512282976/

► Multiple-input multiple-output (MIMO) technique is one of the most promising solutions for increasing reliability and spectral efficiency of the radio connection in future mobile communication… (more)

▼ Multiple-input multiple-output (MIMO) technique is one of the most promising solutions for increasing reliability and spectral efficiency of the radio connection in future mobile communication systems. The performance potential of MIMO systems is well established from theoretical point of view. However, much effort is still needed in the experimental verification of those systems using realistic antennas and channels. It is widely accepted that the antenna properties are of significant importance regarding the performance of single-input single-output (SISO) systems. However, the effect of the antennas on MIMO systems has not been thoroughly studied. Due to the complexity of MIMO systems, evaluation of MIMO antennas becomes increasingly cumbersome and time-consuming process in comparison to simpler systems. In the first part of this work an advanced antenna evaluation technique called experimental plane-wave based method (EPWBM) is generalized and validated to cover MIMO systems. This work is the extension of the previous work where the method has been used in the analysis of SISO systems. The EPWBM is based on the measured or simulated complex 3-D radiation patterns of the antennas and measured directional radio channel data. The EPWBM simplifies antenna evaluation process in comparison to traditional means since the same channel library can be utilized in the evaluation of several antenna systems without performing the same measurements for each prototype antennas separately. It is verified that the EPWBM is sufficiently reliable in comparing the performance of prototype antennas. In the second part of the work new quality factors for MIMO system evaluation enclosing traditional systems as special cases have been developed. The MIMO channel correlation matrix is formulated so that it reveals the ability of MIMO antenna systems to transfer signal power from a transmitter to a receiver and to utilize parallel spatial channels. It is also verified that correct normalization of the channel matrices is of significant importance in the MIMO antenna evaluation. This approach gives comprehensive framework for MIMO antenna evaluation, which takes into account both realistic antenna and channel properties. In the last part of the work insight into the performance of different antennas in different signal propagation environments is given. The performance of the antennas depends on the signal-to-noise-ratio and on the outage probability level considered. Although MIMO systems are based on the utilization of parallel spatial channels, the capability of the system to transfer signal power plays a significant role especially with small MIMO systems. In the realistic dynamic channels the capacity variation is larger than in the ideal channels, which are based on the identically and independently distributed (iid) channel assumption. Large performance variations occur in the realistic channels with directive antennas, when antennas are rotated in the usage environment, whereas omnidirectional ones are more robust but are… Advisors/Committee Members: Helsinki University of Technology, Department of Electrical and Communications Engineering, Radio Laboratory.

Subjects/Keywords: multiple-input multiple-output (MIMO); antenna evaluation; multielement antennas; channel measurements

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Suvikunnas, P. (2006). Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications. (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2006/isbn9512282976/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Suvikunnas, Pasi. “Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications.” 2006. Thesis, Helsinki University of Technology. Accessed January 19, 2021. http://lib.tkk.fi/Diss/2006/isbn9512282976/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Suvikunnas, Pasi. “Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications.” 2006. Web. 19 Jan 2021.

Vancouver:

Suvikunnas P. Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications. [Internet] [Thesis]. Helsinki University of Technology; 2006. [cited 2021 Jan 19]. Available from: http://lib.tkk.fi/Diss/2006/isbn9512282976/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Suvikunnas P. Methods and Criteria for Performance Analysis of Multiantenna Systems in Mobile Communications. [Thesis]. Helsinki University of Technology; 2006. Available from: http://lib.tkk.fi/Diss/2006/isbn9512282976/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Porto

4. Marques, Pedro Manuel Martins. MIMO transmission for 4G wireless communications.

Degree: 2009, Universidade do Porto

URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/58202

Tese de doutoramento. Engenharia Electrotécnica e de Computadores. Faculdade de Engenharia. Universidade do Porto. 2009 Advisors/Committee Members: Moreira, Sílvio Almeida Abrantes, Universidade do Porto. Faculdade de Engenharia.

Subjects/Keywords: MIMO (Multiple Input Multiple Output); Wireless; Telecomunicações; Simulação computacional

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Marques, P. M. M. (2009). MIMO transmission for 4G wireless communications. (Thesis). Universidade do Porto. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/58202

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Marques, Pedro Manuel Martins. “MIMO transmission for 4G wireless communications.” 2009. Thesis, Universidade do Porto. Accessed January 19, 2021. http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/58202.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Marques, Pedro Manuel Martins. “MIMO transmission for 4G wireless communications.” 2009. Web. 19 Jan 2021.

Vancouver:

Marques PMM. MIMO transmission for 4G wireless communications. [Internet] [Thesis]. Universidade do Porto; 2009. [cited 2021 Jan 19]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/58202.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Marques PMM. MIMO transmission for 4G wireless communications. [Thesis]. Universidade do Porto; 2009. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/58202

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

5. Mirza, Jawad. Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems.

Degree: 2015, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4904

► Multiple antenna systems provide spatial multiplexing and diversity benefits.These systems also offer beamforming and interference mitigation capabilities in single-user (SU) and multi-user (MU) scenarios, respectively.… (more)

▼ Multiple antenna systems provide spatial multiplexing and diversity benefits.These systems also offer beamforming and interference mitigation capabilities in single-user (SU) and multi-user (MU) scenarios, respectively. Although diversity can be achieved without channel state information (CSI) at the transmitter using space-time codes, the knowledge of instantaneous CSI at the transmitter is essential to the above mentioned gains. In frequency division duplexing (FDD) systems, limited feedback techniques are employed to obtain CSI at the transmitter from the receiver using a low-rate link. As a consequence, CSI acquired by the transmitter in such manner have errors due to channel estimation and codebook quantization at the receiver, resulting in performance degradation of multi-antenna systems. In this thesis, we examine CSI inaccuracies due to codebook quantization errors and investigate several other aspects of limited feedback in SU, MU and multicell wireless communication systems with various channel models. For SU multiple-input multiple-output (MIMO) systems, we examine the capacity loss using standard codebooks. In particular, we consider single-stream and two-stream MIMO transmissions and derive capacity loss expressions in terms of minimum squared chordal distance for various MIMO receivers. Through simulations, we investigate the impact of codebook quantization errors on the capacity performance in uncorrelated Rayleigh, spatially correlated Rayleigh and standardized MIMO channels. This work motivates the need of effective codebook design to reduce the codebook quantization errors in correlated channels. Subsequently, we explore the improvements in the design of codebooks in temporally and spatially correlated channels for MU multiple-input single-output (MISO) systems, by employing scaling and rotation techniques. These codebooks quantize instantaneous channel direction information (CDI) and are referred as differential codebooks in the thesis. We also propose various adaptive scaling techniques for differential codebooks where packing density of codewords in the differential codebook are altered according to the channel condition, in order to reduce the quantization errors. The proposed differential codebooks improve the spectral efficiency of the system by minimizing the codebook quantization errors in spatially and temporally correlated channels. Later, we broaden the scope to massive MISO systems and propose trellis coded quantization (TCQ) schemes to quantize CDI. Unlike conventional codebook approach, the TCQ scheme does not require exhaustive search to select an appropriate codeword, thus reducing computational complexity and memory requirement at the receiver. The proposed TCQ schemes yield significant performance improvements compared to the existing TCQ based limited feedback schemes in both temporally and spatially correlated channels. Finally, we investigate interference coordination for multicell MU MISO systems using regularized zero-forcing (RZF) precoding. We consider random vector… Advisors/Committee Members: Dmochowski, Pawel, Shafi, Mansoor.

Subjects/Keywords: MIMO; Multiple-input multiple-output; Limited feedback; Signal process

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mirza, J. (2015). Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4904

Chicago Manual of Style (16^th Edition):

Mirza, Jawad. “Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems.” 2015. Doctoral Dissertation, Victoria University of Wellington. Accessed January 19, 2021. http://hdl.handle.net/10063/4904.

MLA Handbook (7^th Edition):

Mirza, Jawad. “Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems.” 2015. Web. 19 Jan 2021.

Vancouver:

Mirza J. Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2015. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10063/4904.

Council of Science Editors:

Mirza J. Limited Feedback Techniques in Multiple Antenna Wireless Communication Systems. [Doctoral Dissertation]. Victoria University of Wellington; 2015. Available from: http://hdl.handle.net/10063/4904

University of Illinois – Chicago

6. Elnour, Badria M. A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications.

Degree: 2012, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/9279

► This thesis research is dedicated to the design, implementation and system analysis of a six element vector antenna. In wireless communications, there is an increasing… (more)

Subjects/Keywords: MIMO; Vector antenna; Channel Capacity; Multiple Input Multiple Output

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Elnour, B. M. (2012). A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/9279

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Elnour, Badria M. “A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications.” 2012. Thesis, University of Illinois – Chicago. Accessed January 19, 2021. http://hdl.handle.net/10027/9279.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Elnour, Badria M. “A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications.” 2012. Web. 19 Jan 2021.

Vancouver:

Elnour BM. A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications. [Internet] [Thesis]. University of Illinois – Chicago; 2012. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10027/9279.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Elnour BM. A Novel MIMO Six Element Vector Antenna for Direction of Arrival Estimation in Radar Systems Applications. [Thesis]. University of Illinois – Chicago; 2012. Available from: http://hdl.handle.net/10027/9279

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

De Montfort University

7. Mahmood, Khalid. Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems.

Degree: PhD, 2013, De Montfort University

URL: http://hdl.handle.net/2086/10203

► Researchers have shown that by combining multiple input multiple output (MIMO) techniques with CDMA then higher gains in capacity, reliability and data transmission speed can… (more)

▼ Researchers have shown that by combining multiple input multiple output (MIMO) techniques with CDMA then higher gains in capacity, reliability and data transmission speed can be attained. But a major drawback of MIMO-CDMA systems is multiple access interference (MAI) which can reduce the capacity and increase the bit error rate (BER), so statistical analysis of MAI becomes a very important factor in the performance analysis of these systems. In this thesis, a detailed analysis of MAI is performed for binary phase-shift keying (BPSK) signals with random signature sequence in Raleigh fading environment and closed from expressions for the probability density function of MAI and MAI with noise are derived. Further, probability of error is derived for the maximum Likelihood receiver. These derivations are verified through simulations and are found to reinforce the theoretical results. Since the performance of MIMO suffers significantly from MAI and inter-symbol interference (ISI), equalization is needed to mitigate these effects. It is well known from the theory of constrained optimization that the learning speed of any adaptive filtering algorithm can be increased by adding a constraint to it, as in the case of the normalized least mean squared (NLMS) algorithm. Thus, in this work both linear and non-linear decision feedback (DFE) equalizers for MIMO systems with least mean square (LMS) based constrained stochastic gradient algorithm have been designed. More specifically, an LMS algorithm has been developed , which was equipped with the knowledge of number of users, spreading sequence (SS) length, additive noise variance as well as MAI with noise (new constraint) and is named MIMO-CDMA MAI with noise constrained (MNCLMS) algorithm. Convergence and tracking analysis of the proposed algorithm are carried out in the scenario of interference and noise limited systems, and simulation results are presented to compare the performance of MIMO-CDMA MNCLMS algorithm with other adaptive algorithms.

Subjects/Keywords: 621.384; Multiple-input; multiple-output (MIMO); CDMA; multiple access interference (MAI); probability density function (pdf)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mahmood, K. (2013). Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems. (Doctoral Dissertation). De Montfort University. Retrieved from http://hdl.handle.net/2086/10203

Chicago Manual of Style (16^th Edition):

Mahmood, Khalid. “Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems.” 2013. Doctoral Dissertation, De Montfort University. Accessed January 19, 2021. http://hdl.handle.net/2086/10203.

MLA Handbook (7^th Edition):

Mahmood, Khalid. “Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems.” 2013. Web. 19 Jan 2021.

Vancouver:

Mahmood K. Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems. [Internet] [Doctoral dissertation]. De Montfort University; 2013. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2086/10203.

Council of Science Editors:

Mahmood K. Constrained linear and non-linear adaptive equalization techniques for MIMO-CDMA systems. [Doctoral Dissertation]. De Montfort University; 2013. Available from: http://hdl.handle.net/2086/10203

NSYSU

8. Chen, Sin-Fong. Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System.

Degree: Master, Communications Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828112-173135

► For wireless communication systems, due to broadcasting nature of wireless medium, how to keep eavesdroppers from wiretapping messages is worth investigated. In addition to encryption… (more)

Subjects/Keywords: multiple-input multiple-output (MIMO); precoder optimization; physical layer secrecy; Cooperative communication; secrecy capacity.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, S. (2012). Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828112-173135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Sin-Fong. “Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System.” 2012. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828112-173135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Sin-Fong. “Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System.” 2012. Web. 19 Jan 2021.

Vancouver:

Chen S. Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828112-173135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen S. Jointly Precoder Design with Wiretapping Relay for an Amplify-and-Forward MIMO System. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0828112-173135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Utah

9. Mao, Xuehong. Statistical joint channel estimation and data detection for multiple antenna wireless communications.

Degree: PhD, Electrical & Computer Engineering, 2013, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2123/rec/2249

► Multiple-input and multiple-output (MIMO) technique has emerged as a keyfeature for future generations of wireless communication systems. It increases thechannel capacity proportionate to the minimum… (more)

▼ Multiple-input and multiple-output (MIMO) technique has emerged as a keyfeature for future generations of wireless communication systems. It increases thechannel capacity proportionate to the minimum number of transmit and receiveantennas. This dissertation addresses the receiver design for high-rate MIMO communicationsin at fading environments. The emphasis of the thesis is on the cases wherechannel state information (CSI) is not available and thus, clever channel estimationalgorithms have to be developed to bene t from the maximum available channelcapacity. The thesis makes four distinct novel contributions. First, we note thatthe conventional MCMC-MIMO detector presented in the prior work may deteriorateas SNR increases. We suggest and show through computer simulations that thisproblem to a great extent can be solved by initializing the MCMC detector withregulated states which are found through linear detectors. We also introduce thenovel concept of staged-MCMC in a turbo receiver, where we start the detectionprocess at a lower complexity and increase complexity only if the data could not becorrectly detected in the present stage of data detection. Second, we note that inhigh-rate MIMO communications, joint data detection and channel estimation posesnew challenges when a turbo loop is used to improve the quality of the estimatedchannel and the detected data. Erroneous detected data may propagate in theturbo loop and, thus, degrade the performance of the receiver signi cantly. Thisis referred to as error propagation. We propose a novel receiver that decorrelateschannel estimation and the detected data to avoid the detrimental e ect of errorpropagation. Third, the dissertation studies joint channel estimation and MIMOdetection over a continuously time-varying channel and proposes a new dual-layerchannel estimator to overcome the complexity of optimal channel estimators. Theproposed dual-layer channel estimator reduces the complexity of the MIMO detectorwith optimal channel estimator by an order of magnitude at a cost of a negligibleperformance degradation, on the order of 0.1 to 0.2 dB. The fourth contribution ofthis dissertation is to note that the Wiener ltering techniques that are discussed inthis dissertation and elsewhere in the literature assume that channel (time-varying)statistics are available. We propose a new method that estimates such statistics usingthe coarse channel estimates obtained through pilot symbols. The dissertation alsomakes an additional contribution revealing di erences between the MCMC-MIMOand LMMSE-MIMO detectors. We nd that under the realistic condition whereCSI has to be estimated, hence the available channel estimate will be noisy, theMCMC-MIMO detector outperforms the LMMSE-MIMO detector with a signi cantmargin.

Subjects/Keywords: Joint channel estimation and data detection; Multiple-input and multiple-output (MIMO); Statistical signal processing

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mao, X. (2013). Statistical joint channel estimation and data detection for multiple antenna wireless communications. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2123/rec/2249

Chicago Manual of Style (16^th Edition):

Mao, Xuehong. “Statistical joint channel estimation and data detection for multiple antenna wireless communications.” 2013. Doctoral Dissertation, University of Utah. Accessed January 19, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2123/rec/2249.

MLA Handbook (7^th Edition):

Mao, Xuehong. “Statistical joint channel estimation and data detection for multiple antenna wireless communications.” 2013. Web. 19 Jan 2021.

Vancouver:

Mao X. Statistical joint channel estimation and data detection for multiple antenna wireless communications. [Internet] [Doctoral dissertation]. University of Utah; 2013. [cited 2021 Jan 19]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2123/rec/2249.

Council of Science Editors:

Mao X. Statistical joint channel estimation and data detection for multiple antenna wireless communications. [Doctoral Dissertation]. University of Utah; 2013. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2123/rec/2249

10. Yuti Mendes Mostagi. Detecção sub-ótima em sistemas MIMO.

Degree: 2012, Universidade Estadual de Londrina

URL: http://www.bibliotecadigital.uel.br/document/?code=vtls000175510

►

Em sistemas com múltiplas antenas no transmissor e receptor (MIMO -Multiple-input Multiple-output), ocorre a degradação do desempenho no processo de detecção convencional, o qual está… (more)

▼

Em sistemas com múltiplas antenas no transmissor e receptor (MIMO -Multiple-input Multiple-output), ocorre a degradação do desempenho no processo de detecção convencional, o qual está baseado apenas no processamento do sinal em um único correlacionador; em seguida, o receptor convencional procede à comparação do sinal à saída do filtro casado com os possíveis símbolos da constelação, determinando assim, a informação transmitida estimada, uma vez que o detector convencional negligencia os demais sinais interferentes presentes no canal MIMO. Esta degradação ocorre devido à combinação dos efeitos da interferência do sinal entre antenas e da possível correlação entre os sinais recebidos com desvanecimento, entre outros. Assim, o receptor convencional torna-se ineficiente em sistemas que demandem alta vazão (throughput) de dados, por exemplo em sistemas MIMO no modo ganho de multiplexação, associado ao atendimento de qualidade de serviço (QoS) mais restritiva. A solução proposta para resolver este impasse é a utilização do detector de máxima verossimilhança (MLD), o qual utiliza informações de todas as antenas de forma a melhorar o processo de detecção. Porém, o detector ótimo é impraticável devido ao fato de sua complexidade aumentar exponencialmente em relação ao número de antenas e a ordem da constelação. Assim, o foco de interesse deste trabalho são os detectores sub-ótimos de busca guiada para sistemas MIMO baseados na função de máxima verossimilhança (ML). Neste trabalho é realizada uma análise comparada do compromisso desempenho × complexidade e da robustez face aos erros de estimativa nos coeficientes de canal de detectores de busca guiada promissores, incluindo o Detector Esférico (SD), o detector baseado na decomposição QR combinado ao algoritmo M (QRD-M) e o Detector de Busca Gulosa (Greedy Search Detector - GSD). Adicionalmente, neste trabalho é proposto um detector híbrido combinando-se as características promissoras do SD e do QRD-M sendo este submetido à mesma análise dos outros detectores. Finalmente, este trabalho propõe de forma inovadora o uso da técnica de Redução Treliça (LR - Lattice Reduction) combinado aos detectores MIMO analisados. A técnica LR realiza uma transformação na matriz de canal, tornando-a mais próxima da ortogonalidade, o que permite a utilização de detectores menos complexos, como por exemplo o QRD-M com baixos valores de M, ou ainda proporciona a redução na complexidade final de detectores que exigem mais recursos de sistema, como o SD.

In multiple-input-multiple-output (MIMO) systems, there is a performance degradation using conventional detector (CD), based on the processed signal of only one correlator, that compares the received signal with the possible symbols, determining in this way, an estimated transmitted information, since the CD neglects the other interfering signals present in the MIMO channel. This degradation occurs due to a combination of effects of interference of the signal among antennas and a possible correlation between the faded received signals, and other…

Advisors/Committee Members: Fábio Renand Durand, Taufik Abrão ., Paulo Rogério Scalassara.

Subjects/Keywords: MIMO - Multiple-input Multiple-output; Electrical engineering; Engenharia elétrica; Detecção ML quase-ótima

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mostagi, Y. M. (2012). Detecção sub-ótima em sistemas MIMO. (Thesis). Universidade Estadual de Londrina. Retrieved from http://www.bibliotecadigital.uel.br/document/?code=vtls000175510

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mostagi, Yuti Mendes. “Detecção sub-ótima em sistemas MIMO.” 2012. Thesis, Universidade Estadual de Londrina. Accessed January 19, 2021. http://www.bibliotecadigital.uel.br/document/?code=vtls000175510.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mostagi, Yuti Mendes. “Detecção sub-ótima em sistemas MIMO.” 2012. Web. 19 Jan 2021.

Vancouver:

Mostagi YM. Detecção sub-ótima em sistemas MIMO. [Internet] [Thesis]. Universidade Estadual de Londrina; 2012. [cited 2021 Jan 19]. Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000175510.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mostagi YM. Detecção sub-ótima em sistemas MIMO. [Thesis]. Universidade Estadual de Londrina; 2012. Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000175510

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Mota, Susana de Jesus. Channel modelling for MIMO systems .

Degree: 2014, Universidade de Aveiro

URL: http://hdl.handle.net/10773/14961

► Systems equipped with multiple antennas at the transmitter and at the receiver, known as MIMO (Multiple Input Multiple Output) systems, offer higher capacities, allowing an… (more)

▼ Systems equipped with multiple antennas at the transmitter and at the receiver, known as MIMO (Multiple Input Multiple Output) systems, offer higher capacities, allowing an efficient exploitation of the available spectrum and/or the employment of more demanding applications. It is well known that the radio channel is characterized by multipath propagation, a phenomenon deemed problematic and whose mitigation has been achieved through techniques such as diversity, beamforming or adaptive antennas. By exploring conveniently the spatial domain MIMO systems turn the characteristics of the multipath channel into an advantage and allow creating multiple parallel and independent virtual channels. However, the achievable benefits are constrained by the propagation channel’s characteristics, which may not always be ideal. This work focuses on the characterization of the MIMO radio channel. It begins with the presentation of the fundamental results from information theory that triggered the interest on these systems, including the discussion of some of their potential benefits and a review of the existing channel models for MIMO systems. The characterization of the MIMO channel developed in this work is based on experimental measurements of the double-directional channel. The measurement system is based on a vector network analyzer and a two-dimensional positioning platform, both controlled by a computer, allowing the measurement of the channel’s frequency response at the locations of a synthetic array. Data is then processed using the SAGE (Space-Alternating Expectation-Maximization) algorithm to obtain the parameters (delay, direction of arrival and complex amplitude) of the channel’s most relevant multipath components. Afterwards, using a clustering algorithm these data are grouped into clusters. Finally, statistical information is extracted allowing the characterization of the channel’s multipath components. The information about the multipath characteristics of the channel, induced by existing scatterers in the propagation scenario, enables the characterization of MIMO channel and thus to evaluate its performance. The method was finally validated using MIMO measurements. Advisors/Committee Members: Rocha, Armando (advisor).

Subjects/Keywords: Comunicações de acesso múltiplo; Comunicações móveis; Estimativa de parâmetros; MIMO (Multiple-input multiple-output)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mota, S. d. J. (2014). Channel modelling for MIMO systems . (Thesis). Universidade de Aveiro. Retrieved from http://hdl.handle.net/10773/14961

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mota, Susana de Jesus. “Channel modelling for MIMO systems .” 2014. Thesis, Universidade de Aveiro. Accessed January 19, 2021. http://hdl.handle.net/10773/14961.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mota, Susana de Jesus. “Channel modelling for MIMO systems .” 2014. Web. 19 Jan 2021.

Vancouver:

Mota SdJ. Channel modelling for MIMO systems . [Internet] [Thesis]. Universidade de Aveiro; 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10773/14961.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mota SdJ. Channel modelling for MIMO systems . [Thesis]. Universidade de Aveiro; 2014. Available from: http://hdl.handle.net/10773/14961

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

12. Chau, Jimmy C. Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications.

Degree: PhD, Electrical & Computer Engineering, 2016, Boston University

URL: http://hdl.handle.net/2144/19427

► Visible light communication (VLC) is an emerging form of optical wireless communication that transmits data by modulating light in the visible spectrum. To meet the… (more)

▼ Visible light communication (VLC) is an emerging form of optical wireless communication that transmits data by modulating light in the visible spectrum. To meet the growing demand for wireless communication capacity from mobile devices, we investigate multiple-input multiple-output (MIMO) VLC to achieve multiplexing capacity gains and to allow multiple users to simultaneously transmit without disrupting each other. Previous approaches to receive VLC signals have either been unable to simultaneously receive multiple independent signals from multiple transmitters, unable to adapt to moving transmitters and receivers, or unable to sample the received signals fast enough for high-speed VLC. In this dissertation, we develop and evaluate two novel approaches to receive high-speed MIMO VLC signals from mobile transmitters that can be practically scaled to support additional transmitters. The first approach, Token-Based Pixel Selection (TBPS) exploits the redundancy and sparsity of high-resolution transmitter images in imaging VLC receivers to greatly increase the rate at which complementary metal-oxide semiconductor (CMOS) active pixel sensor (APS) image sensors can sample VLC signals though improved signal routing to enable such high-resolution image sensors to capture high-speed VLC signals. We further model the CMOS APS pixel as a linear shift-invariant system, investigate how it scales to support additional transmitters and higher resolutions, and investigate how noise can affect its performance. The second approach, a spatial light modulator (SLM)-based VLC receiver, uses an SLM to dynamically control the resulting wireless channel matrix to enable relatively few photodetectors to reliably receive from multiple transmitters despite their movements. As part of our analysis, we develop a MIMO VLC channel capacity model that accounts for the non-negativity and peak-power constraints of VLC systems to evaluate the performance of the SLM VLC receiver and to facilitate the optimization of the channel matrix through the SLM.

Subjects/Keywords: Computer engineering; Capacity; Multiple input multiple output (MIMO); Optical wireless communication; Receiver; Visible light communication

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chau, J. C. (2016). Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/19427

Chicago Manual of Style (16^th Edition):

Chau, Jimmy C. “Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications.” 2016. Doctoral Dissertation, Boston University. Accessed January 19, 2021. http://hdl.handle.net/2144/19427.

MLA Handbook (7^th Edition):

Chau, Jimmy C. “Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications.” 2016. Web. 19 Jan 2021.

Vancouver:

Chau JC. Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications. [Internet] [Doctoral dissertation]. Boston University; 2016. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2144/19427.

Council of Science Editors:

Chau JC. Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications. [Doctoral Dissertation]. Boston University; 2016. Available from: http://hdl.handle.net/2144/19427

University of Edinburgh

13. Shtarkalev, Bogomil Iliev. Single data set detection for multistatic Doppler radar.

Degree: PhD, 2015, University of Edinburgh

URL: http://hdl.handle.net/1842/10556

► The aim of this thesis is to develop and analyse single data set (SDS) detection algorithms that can utilise the advantages of widely-spaced (statistical) multiple-input… (more)

▼ The aim of this thesis is to develop and analyse single data set (SDS) detection algorithms that can utilise the advantages of widely-spaced (statistical) multiple-input multiple-output (MIMO) radar to increase their accuracy and performance. The algorithms make use of the observations obtained from multiple space-time adaptive processing (STAP) receivers and focus on covariance estimation and inversion to perform target detection. One of the main interferers for a Doppler radar has always been the radar’s own signal being reflected off the surroundings. The reflections of the transmitted waveforms from the ground and other stationary or slowly-moving objects in the background generate observations that can potentially raise false alarms. This creates the problem of searching for a target in both additive white Gaussian noise (AWGN) and highly-correlated (coloured) interference. Traditional STAP deals with the problem by using target-free training data to study this environment and build its characteristic covariance matrix. The data usually comes from range gates neighbouring the cell under test (CUT). In non-homogeneous or non-stationary environments, however, this training data may not reflect the statistics of the CUT accurately, which justifies the need to develop SDS methods for radar detection. The maximum likelihood estimation detector (MLED) and the generalised maximum likelihood estimation detector (GMLED) are two reduced-rank STAP algorithms that eliminate the need for training data when mapping the statistics of the background interference. The work in this thesis is largely based on these two algorithms. The first work derives the optimal maximum likelihood (ML) solution to the target detection problem when the MLED and GMLED are used in a multistatic radar scenario. This application assumes that the spatio-temporal Doppler frequencies produces in the individual bistatic STAP pairs of the MIMO system are ideally synchronised. Therefore the focus is on providing the multistatic outcome to the target detection problem. It is shown that the derived MIMO detectors possess the desirable constant false alarm rate (CFAR) property. Gaussian approximations to the statistics of the multistatic MLED and GMLED are derived in order to provide a more in-depth analysis of the algorithms. The viability of the theoretical models and their approximations are tested against a numerical simulation of the systems. The second work focuses on the synchronisation of the spatio-temporal Doppler frequency data from the individual bistatic STAP pairs in the multistatic MLED scenario. It expands the idea to a form that could be implemented in a practical radar scenario. To reduce the information shared between the bistatic STAP channels, a data compression method is proposed that extracts the significant contributions of the MLED likelihood function before transmission. To perform the inter-channel synchronisation, the Doppler frequency data is projected into the space of potential target velocities where the multistatic likelihood…

Subjects/Keywords: 621.384; MIMO; STAP; doppler detection; multiple-input multiple-output; single data set detection

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shtarkalev, B. I. (2015). Single data set detection for multistatic Doppler radar. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/10556

Chicago Manual of Style (16^th Edition):

Shtarkalev, Bogomil Iliev. “Single data set detection for multistatic Doppler radar.” 2015. Doctoral Dissertation, University of Edinburgh. Accessed January 19, 2021. http://hdl.handle.net/1842/10556.

MLA Handbook (7^th Edition):

Shtarkalev, Bogomil Iliev. “Single data set detection for multistatic Doppler radar.” 2015. Web. 19 Jan 2021.

Vancouver:

Shtarkalev BI. Single data set detection for multistatic Doppler radar. [Internet] [Doctoral dissertation]. University of Edinburgh; 2015. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1842/10556.

Council of Science Editors:

Shtarkalev BI. Single data set detection for multistatic Doppler radar. [Doctoral Dissertation]. University of Edinburgh; 2015. Available from: http://hdl.handle.net/1842/10556

University of Notre Dame

14. Jun Chen. Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>.

Degree: Electrical Engineering, 2015, University of Notre Dame

URL: https://curate.nd.edu/show/4j03cz32n4w

► Energy-efficient operation of battery-powered radios is becoming more important to improve device operational times on a battery charge. Future radios will also likely take… (more)

▼ Energy-efficient operation of battery-powered radios is becoming more important to improve device operational times on a battery charge. Future radios will also likely take on a more active role in coordinated monitoring and use of the spectrum in shared spectrum environments, placing additional demands on energy management and requirements to operate with tolerance to interference. Meanwhile, because of increasing demands on spectrum resources, spectral efficiency (SE) is becoming a more crucial design specification of future radio systems. Hence, multiple-input multiple-output (MIMO) technology is expected to be fundamental to future radios. Anticipating the need for energy-efficient, spectrally-efficient, and interference-tolerant MIMO systems, this dissertation analyzes the energy efficiency (EE) and SE of full-multiplexed MIMO systems and adaptive MIMO systems under diverse channel and interference conditions. The analysis considers MIMO systems with space diversity, polarization diversity, and combined space-polarization diversities. Architectures include co-polarized MIMO (CP-MIMO) arrays, dual-polarized MIMO architectures (DP-MIMO), and space-polarization MIMO (SP-MIMO) architectures. The analysis first considers full multiplexing systems in the absence of interference, and assumes that channel state information is not available at the transmitter. Emulation results reveal that the performance of space-based systems degrades in space-correlated channels, but that DP-MIMO systems provide robust performance across the various channel conditions considered in the analysis. Systems that take advantage of channel state information at the transmitter (CSIT) are addressed next, again in the absence of interference. These adaptive transmission systems employ linear precoding and power control to optimize EE while operating at near-maximum SE for the selected number of beams, symbol rate, and constellations. Finally, systems that operate in environments with co-channel interference (CCI) are considered. These MIMO systems employ an interference avoidance (IA) strategy followed by adaptive transmission to optimize EE on the available subcarriers. The minimum energy solution is conditioned on various factors such as channel coding characteristics, linear precoding, IA schemes and channel realizations. A method to identify the optimal transmit power is derived and simulation results show the effectiveness of the IA techniques over MIMO fading channels with different CCI statistics. Advisors/Committee Members: Thomas G. Pratt, Research Director.

Subjects/Keywords: Wireless communications; Multiple-input-multiple-output (MIMO); and Energy-efficient Signal Transmission and Receiving.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, J. (2015). Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/4j03cz32n4w

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Jun. “Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>.” 2015. Thesis, University of Notre Dame. Accessed January 19, 2021. https://curate.nd.edu/show/4j03cz32n4w.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Jun. “Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>.” 2015. Web. 19 Jan 2021.

Vancouver:

Chen J. Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>. [Internet] [Thesis]. University of Notre Dame; 2015. [cited 2021 Jan 19]. Available from: https://curate.nd.edu/show/4j03cz32n4w.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen J. Energy Efficiency Analysis of Packet-Based MIMO Communications Systems over Space and Polarization Radio Channels</h1>. [Thesis]. University of Notre Dame; 2015. Available from: https://curate.nd.edu/show/4j03cz32n4w

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Edinburgh

15. Stavridis, Athanasios. On the energy efficiency of spatial modulation concepts.

Degree: PhD, 2015, University of Edinburgh

URL: http://hdl.handle.net/1842/15951

► Spatial Modulation (SM) is a Multiple-Input Multiple-Output (MIMO) transmission technique which realizes low complexity implementations in wireless communication systems. Due the transmission principle of SM,… (more)

▼ Spatial Modulation (SM) is a Multiple-Input Multiple-Output (MIMO) transmission technique which realizes low complexity implementations in wireless communication systems. Due the transmission principle of SM, only one Radio Frequency (RF) chain is required in the transmitter. Therefore, the complexity of the transmitter is lower compared to the complexity of traditional MIMO schemes, such as Spatial MultipleXing (SMX). In addition, because of the single RF chain configuration of SM, only one Power Amplifier (PA) is required in the transmitter. Hence, SM has the potential to exhibit significant Energy Efficiency (EE) benefits. At the receiver side, due to the SM transmission mechanism, detection is conducted using a low complexity (single stream) Maximum Likelihood (ML) detector. However, despite the use of a single stream detector, SM achieves a multiplexing gain. A point-to-point closed-loop variant of SM is receive space modulation. In receive space modulation, the concept of SMis extended at the receiver side, using linear precoding with Channel State Information at the Transmitter (CSIT). Even though receive space modulation does not preserve the single RF chain configuration of SM, due to the deployed linear precoding, it can be efficiently incorporated in a Space Division Multiple Access (SDMA) or in a Virtual Multiple-Input Multiple-Output (VMIMO) architecture. Inspired by the potentials of SM, the objectives of this thesis are the evaluation of the EE of SM and its extension in different forms of MIMO communication. In particular, a realistic power model for the power consumption of a Base Station (BS) is deployed in order to assess the EE of SM in terms of Mbps/J. By taking into account the whole power supply of a BS and considering a Time Division Multiple Access (TDMA) multiple access scheme, it is shown that SM is significantly more energy efficient compared to the traditional MIMO techniques. In the considered system setup, it is shown that SM is up to 67% more energy efficient compared to the benchmark systems. In addition, the concept of space modulation is researched at the receiver side. Specifically, based on the union bound technique, a framework for the evaluation of the Average Bit Error Probability (ABEP), diversity order, and coding gain of receive space modulation is developed. Because receive space modulation deploys linear precoding with CSIT, two new precoding methods which utilize imperfect CSIT are proposed. Furthermore, in this thesis, receive space modulation is incorporated in the broadcast channel. The derivation of the theoretical ABEP, diversity order, and coding gain of the new broadcast scheme is provided. It is concluded that receive space modulation is able to outperform the corresponding traditional MIMO scheme. Finally, SM, receive space modulation, and relaying are combined in order to form a novel virtual MIMO architecture. It is shown that the new architecture practically eliminates or reduces the problem of the inefficient relaying of the uncoordinated virtual MIMO space…

Subjects/Keywords: 621.384; MIMO; Multiple-Input Multiple-Output; wireless communication; relaying; broadcast channel; spatial modulation; SM

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Stavridis, A. (2015). On the energy efficiency of spatial modulation concepts. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/15951

Chicago Manual of Style (16^th Edition):

Stavridis, Athanasios. “On the energy efficiency of spatial modulation concepts.” 2015. Doctoral Dissertation, University of Edinburgh. Accessed January 19, 2021. http://hdl.handle.net/1842/15951.

MLA Handbook (7^th Edition):

Stavridis, Athanasios. “On the energy efficiency of spatial modulation concepts.” 2015. Web. 19 Jan 2021.

Vancouver:

Stavridis A. On the energy efficiency of spatial modulation concepts. [Internet] [Doctoral dissertation]. University of Edinburgh; 2015. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1842/15951.

Council of Science Editors:

Stavridis A. On the energy efficiency of spatial modulation concepts. [Doctoral Dissertation]. University of Edinburgh; 2015. Available from: http://hdl.handle.net/1842/15951

Queens University

16. Li, Yihu. On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks .

Degree: Electrical and Computer Engineering, 2013, Queens University

URL: http://hdl.handle.net/1974/8425

► IEEE 802.11n Wireless Local Area Networks (WLANs) employ Multiple-Input-Multiple-Output (MIMO), which significantly boosts the raw data rate at the Physical layer (PHY). But the potential… (more)

▼ IEEE 802.11n Wireless Local Area Networks (WLANs) employ Multiple-Input-Multiple-Output (MIMO), which significantly boosts the raw data rate at the Physical layer (PHY). But the potential of enhancing Medium Access Control (MAC) layer efficiencies by MIMO is still in its early stage and is the aim of the research in this thesis. Many existing works in this field mainly employ distributed MIMO spatial multiplexing/Multi-User Detection (MUD) technique and stream sharing to enable multiple simultaneous transmissions. Most works require synchronization among multiple transmissions, split the channel, and aim for single-hop networks. In this thesis, a novel Hybrid Carrier Sense (HCS) framework is proposed, mainly at the MAC layer to exploit the power of MIMO. HCS senses the channel availability jointly by the virtual carrier sense and physical carrier sense. HCS does not require synchronization among nodes; each node independently and locally determines when to start its transmission. HCS not only shares the channel, but also exploits the bi-directional handshakes of the wireless transmissions and increases the number of simultaneous stream transmissions. For a network with M antennas in each node, HCS can accommodate 2x(M-1) streams instead of M streams achieved by all other existing works. Moreover, HCS is aimed for multi-hop wireless ad hoc networks, in which the hidden terminal, exposed terminal, and deafness problems greatly degrade network performance. The HCS framework incorporates solutions to these problems. HCS is implemented in an NS2 network simulator and the performance evaluation shows that HCS significantly outperforms MIMO-enabled IEEE 802.11 (in which MIMO is only used for enhancing the raw data rate in the physical layer), resulting in higher aggregate throughput, packet delivery ratio and fairness in multi-hop wireless ad hoc networks. The HCS framework will be in wide use in the future generation of wireless networks and opens up more research possibilities. Some ideas in the HCS framework can be applied not only for MIMO, but also for many other techniques surveyed in this thesis; or we may combine them with HCS to further boost the network performance.

Subjects/Keywords: Multiple-Input-Multiple-Output (MIMO) ; Hybrid Carrier Sense (HCS) ; Medium Access Control (MAC) ; IEEE 802.11

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, Y. (2013). On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/8425

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Yihu. “On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks .” 2013. Thesis, Queens University. Accessed January 19, 2021. http://hdl.handle.net/1974/8425.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Yihu. “On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks .” 2013. Web. 19 Jan 2021.

Vancouver:

Li Y. On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks . [Internet] [Thesis]. Queens University; 2013. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1974/8425.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li Y. On Cross-Layer Design of Distributed MIMO Spatial Multiplexing Compliant Wireless Ad hoc Networks . [Thesis]. Queens University; 2013. Available from: http://hdl.handle.net/1974/8425

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle

17. Griffiths, Ian. Soft detection of spatially diverse wireless communications via stochastic sampling.

Degree: PhD, 2014, University of Newcastle

URL: http://hdl.handle.net/1959.13/1042270

►

Research Doctorate - Doctor of Philosophy (PhD)

This thesis investigates the application of the Metropolis-Hastings algorithm to the problem of symbol detection for Multiple Input… (more)

▼

Research Doctorate - Doctor of Philosophy (PhD)

This thesis investigates the application of the Metropolis-Hastings algorithm to the problem of symbol detection for Multiple Input Multiple Output (MIMO) wireless communication systems. The most common methods employed for MIMO detection approximate the maximum likelihood (ML) decision rule, by solving the closest lattice point problem. By contrast, Markov chain Monte Carlo (MCMC) methods such as the Metropolis-Hastings algorithm provide an efficient approximation for the maximum a-posteriori (MAP) decision rule. The key difference is that the MAP rule naturally incorporates prior information, in fact the ML rule is equivalent to MAP when no prior information is available. The incorporation of prior information makes MCMC based detectors ideal for use in an iterative receiver structure where the MIMO detector and channel decoder exchange information in a loop. The performance of a range of MIMO detectors based on the Metropolis-Hastings algorithm is characterised using mutual information transfer curves that illustrate how the detectors would behave when paired with a decoder, and the impacts of altering various parameters on the characteristics are demonstrated. The use of multiple MCMC sampling chains gives rise to perhaps the best characteristics. The feasibility of using multiple sampling chains in a practical MCMC based MIMO detector silicon chip is investigated by implementing various functional units that may be used as the building blocks for many of the detectors previously examined. The area requirements and maximum clock frequency of these functional units are used to assess their relative complexities. Finally a subset of the functional units are configured into a complete sampling chain core. The results of synthesizing that core are promising and demonstrate that MCMC based MIMO detectors are practical to implement and further work and optimisation is warranted.

Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science.

Subjects/Keywords: MCMC; MIMO; Metropolis-Hastings; Markov Chain Monte Carlo; Multiple Input Multiple Output; wireless communications; Soft Input Soft Output

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Griffiths, I. (2014). Soft detection of spatially diverse wireless communications via stochastic sampling. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1042270

Chicago Manual of Style (16^th Edition):

Griffiths, Ian. “Soft detection of spatially diverse wireless communications via stochastic sampling.” 2014. Doctoral Dissertation, University of Newcastle. Accessed January 19, 2021. http://hdl.handle.net/1959.13/1042270.

MLA Handbook (7^th Edition):

Griffiths, Ian. “Soft detection of spatially diverse wireless communications via stochastic sampling.” 2014. Web. 19 Jan 2021.

Vancouver:

Griffiths I. Soft detection of spatially diverse wireless communications via stochastic sampling. [Internet] [Doctoral dissertation]. University of Newcastle; 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1959.13/1042270.

Council of Science Editors:

Griffiths I. Soft detection of spatially diverse wireless communications via stochastic sampling. [Doctoral Dissertation]. University of Newcastle; 2014. Available from: http://hdl.handle.net/1959.13/1042270

University of Arkansas

18. Arnold, Christopher Charles. Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication.

Degree: MSEE, 2015, University of Arkansas

URL: https://scholarworks.uark.edu/etd/1194

► This thesis presents the design, fabrication and characterization of a multiband uniplanar MIMO antenna for hand-held mobile communication devices on LTE, WLAN, and WMAN… (more)

▼ This thesis presents the design, fabrication and characterization of a multiband uniplanar MIMO antenna for hand-held mobile communication devices on LTE, WLAN, and WMAN networks. The antenna design methodology combined a variety of broadbanding techniques that resulted in a single-layer hybrid monopole antenna coupled to a meander line element and parasitic structures. The 115×55×1.54 mm antenna was fabricated using an FR4 composite material and occupies only a fractional volume within the size of an average cellular phone allowing ample space to integrate with existing hardware. Characterization of the MIMO antenna included input impedance, scattering parameters and radiation pattern cross sections that were all measured from 500-6500 MHz inside an anechoic chamber. The measurement results indicated four main operating regions of the multiband antenna centered at 875 MHz, 2300 MHz, 3500 MHz, and 5700 MHz with bandwidths of 240 MHz, 740 MHz, 190 MHz, and 370 MHz respectively. Scattering parameter measurements demonstrated excellent coverage of the desired communication spectrum, being able to operate on 30 of the 42 defined LTE bands, as well as common WLAN and WMAN bands. The radiation pattern cross sections in each of the operating regions showed non-directional behavior that is desirable for mobile communication devices. Additionally the envelope correlation coefficient calculated from the measured complex scattering parameters verified that the MIMO antenna achieved good system diversity. Overall, this work resulted in a multiband uniplanar MIMO antenna system suitable for hand-held mobile communication devices. Utilizing cost effective materials and simple geometries allowed fabrication using common methods. The novel antenna can support the high capacity required from evolving communication systems and represents a practical option for use within future generations of mobile devices. Advisors/Committee Members: Magda El-Shenawee, Jingxian Wu, Roy McCann.

Subjects/Keywords: Applied sciences; Antenna; Communication; Fabrication; Input; MIMO; Mobile; Multiple-Input; Multiple-Output; Output; Electronic Devices and Semiconductor Manufacturing

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Arnold, C. C. (2015). Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/1194

Chicago Manual of Style (16^th Edition):

Arnold, Christopher Charles. “Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication.” 2015. Masters Thesis, University of Arkansas. Accessed January 19, 2021. https://scholarworks.uark.edu/etd/1194.

MLA Handbook (7^th Edition):

Arnold, Christopher Charles. “Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication.” 2015. Web. 19 Jan 2021.

Vancouver:

Arnold CC. Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication. [Internet] [Masters thesis]. University of Arkansas; 2015. [cited 2021 Jan 19]. Available from: https://scholarworks.uark.edu/etd/1194.

Council of Science Editors:

Arnold CC. Design, Fabrication, and Measurement of a Multiple-Input Multiple-Output (MIMO) Antenna for Mobile Communication. [Masters Thesis]. University of Arkansas; 2015. Available from: https://scholarworks.uark.edu/etd/1194

University of Alberta

19. Kaviani, Saeed. Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks.

Degree: PhD, Department of Electrical and Computer Engineering, 2012, University of Alberta

URL: https://era.library.ualberta.ca/files/kw52j8890

► Interference is known as a major obstacle for the spectral efficiency increase promised by multiple-antenna techniques in cellular wireless communications. Recently, it has been shown… (more)

Subjects/Keywords: multicell; Coordination multipoint (CoMP); network MIMO; multiuser; wireless; Multiple input multiple output (MIMO); interference; equlization; transceive; cooperation; precoding

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kaviani, S. (2012). Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/kw52j8890

Chicago Manual of Style (16^th Edition):

Kaviani, Saeed. “Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks.” 2012. Doctoral Dissertation, University of Alberta. Accessed January 19, 2021. https://era.library.ualberta.ca/files/kw52j8890.

MLA Handbook (7^th Edition):

Kaviani, Saeed. “Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks.” 2012. Web. 19 Jan 2021.

Vancouver:

Kaviani S. Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks. [Internet] [Doctoral dissertation]. University of Alberta; 2012. [cited 2021 Jan 19]. Available from: https://era.library.ualberta.ca/files/kw52j8890.

Council of Science Editors:

Kaviani S. Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks. [Doctoral Dissertation]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/kw52j8890

NSYSU

20. Chang, Yuan-chu. A Codebook Design Approach for MIMO-SCMA Systems.

Degree: Master, Communications Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727118-094438

► Sparse code multiple access (SCMA) is a non-orthogonal multiple access scheme for future fifth generation wireless networks. This scheme is considered as a promising way… (more)

Subjects/Keywords: Codebook design; factor graph; sparse code multiple access (SCMA); multiple-input multiple-output (MIMO); multi-dimensional constellations

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chang, Y. (2018). A Codebook Design Approach for MIMO-SCMA Systems. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727118-094438

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, Yuan-chu. “A Codebook Design Approach for MIMO-SCMA Systems.” 2018. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727118-094438.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, Yuan-chu. “A Codebook Design Approach for MIMO-SCMA Systems.” 2018. Web. 19 Jan 2021.

Vancouver:

Chang Y. A Codebook Design Approach for MIMO-SCMA Systems. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727118-094438.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang Y. A Codebook Design Approach for MIMO-SCMA Systems. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727118-094438

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cincinnati

21. Pandiya, Nimish. Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom.

Degree: MS, Engineering and Applied Science: Mechanical Engineering, 2017, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068

► Historically, efforts towards vibration testing for nonlinear applications have been focused on single modes in continuous models or rigid body modes in multiple degree of… (more)

Subjects/Keywords: Mechanics; Mechanical Engineering; nonlinear vibration; test rig; multiple input multiple output MIMO; multiple degrees of freedom MDOF; testing; structural dynamics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pandiya, N. (2017). Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068

Chicago Manual of Style (16^th Edition):

Pandiya, Nimish. “Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom.” 2017. Masters Thesis, University of Cincinnati. Accessed January 19, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068.

MLA Handbook (7^th Edition):

Pandiya, Nimish. “Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom.” 2017. Web. 19 Jan 2021.

Vancouver:

Pandiya N. Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom. [Internet] [Masters thesis]. University of Cincinnati; 2017. [cited 2021 Jan 19]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068.

Council of Science Editors:

Pandiya N. Design and Validation of a MIMO Nonlinear Vibration Test Rig with Hardening Stiffness Characteristics in Multiple Degrees of Freedom. [Masters Thesis]. University of Cincinnati; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504879018436068

22. Dioum, Ibra. Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices.

Degree: Docteur es, Électronique, 2013, Nice; Université Cheikh Anta Diop de Dakar

URL: http://www.theses.fr/2013NICE4143

►

La demande de transmissions à débits de plus en plus élevés s’accentue davantage avec l’essor de nouveaux services dans les réseaux de communication sans fils.… (more)

▼

La demande de transmissions à débits de plus en plus élevés s’accentue davantage avec l’essor de nouveaux services dans les réseaux de communication sans fils. Pour répondre à cette demande, une solution consiste à augmenter la capacité de transmission du canal radiofréquence entre la station de base et le terminal portatif. Ceci peut être réalisé en augmentant le nombre d’éléments rayonnant impliqués à l’émission et à la réception de cette liaison radiofréquence : on parle alors de technique MIMO (Multiple Input, Multiple Output). Cette thèse porte principalement sur la conception, l’optimisation et la caractérisation de systèmes multi-antennaires pour techniques de diversité et MIMO en bandes LTE (Long Term Evolution). Trois prototypes multi-bandes sont proposés dont deux systèmes planaires et un système d’antennes IFAs compactes. De nouvelles solutions multi-bandes et l’influence de la position de l’antenne sur le plan de masse sont étudiées pour réaliser de la diversité spatiale, de polarisation et de diagramme de rayonnement avec une faible corrélation entre les signaux reçus sur chaque antenne mais surtout une bonne efficacité totale. Une ligne de neutralisation est utilisée pour isoler les antennes et un fonctionnement multi-bande est réalisé. L’impédance d’entrée des antennes est étudiée avec la méthode de Youla & Carlin afin d’améliorer la bande passante de la structure compacte de type IFA. Les performances en diversité et en MIMO de ces systèmes sont évaluées dans différents environnements de propagation. Elles montrent que ces systèmes peuvent être utilisés efficacement pour des applications en diversité et MIMO.

The transmission demand for increasing data rate becomes more and more important with the development of new services in radio communication networks. To answer to this demand, one solution consists in increasing the transmission capacity of the radio channel between the base station and the handset terminal. This can be realized by increasing the number of radiating elements involved in the transmission and the reception of this radio link: we talk about MIMO (Multiple Input Multiple Output) technique. The work realized in this thesis concerns mainly design, optimization and characterization of multi-antenna systems for MIMO and diversity techniques in LTE (Long Term Evolution) bands. Three multi bands prototypes are proposed whose two planar systems and one compact IFAs antennas system. News multiband solution and antenna position influence on the PCB were studied to realize spatial, polarization and pattern diversity with low correlation between received signals on each antenna and a good efficiency. The neutralization line was used for antennas isolation and its application in multiband was realized. The antenna load impedance has been studied with Youla & Carlin method in order to improve the frequency bandwidth of the compact IFA structure. Diversity and MIMO performances of these systems were evaluated in different propagation environments. They show that these systems can be…

Advisors/Committee Members: Luxey, Cyril (thesis director), Farssi, Sidi Mohamed (thesis director).

Subjects/Keywords: Antennes miniatures; Systèmes multi-antennaires; Long Term Evolution (LTE); Diversité; Multiple InputMultiple Output (MIMO); Miniaturized antennas; Multi antenna systems; Long Term Evolution (LTE); Diversity; Multiple Input Multiple Output (MIMO)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dioum, I. (2013). Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices. (Doctoral Dissertation). Nice; Université Cheikh Anta Diop de Dakar. Retrieved from http://www.theses.fr/2013NICE4143

Chicago Manual of Style (16^th Edition):

Dioum, Ibra. “Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices.” 2013. Doctoral Dissertation, Nice; Université Cheikh Anta Diop de Dakar. Accessed January 19, 2021. http://www.theses.fr/2013NICE4143.

MLA Handbook (7^th Edition):

Dioum, Ibra. “Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices.” 2013. Web. 19 Jan 2021.

Vancouver:

Dioum I. Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices. [Internet] [Doctoral dissertation]. Nice; Université Cheikh Anta Diop de Dakar; 2013. [cited 2021 Jan 19]. Available from: http://www.theses.fr/2013NICE4143.

Council of Science Editors:

Dioum I. Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants : Design of multi-antenna systems for diversity and MIMO techniques : applications to small communicating devices. [Doctoral Dissertation]. Nice; Université Cheikh Anta Diop de Dakar; 2013. Available from: http://www.theses.fr/2013NICE4143

University of Newcastle

23. Dalton, John. A reconfigurable prototyping system for multiple-input multiple-output communications.

Degree: MIMO) communications over-the-air. It covers the entire process, from concept to design and construction, culminating in transmitting space-time coded data packets and producing bit error rate (BER) performance curves. A flexible modular architecture is designed, able to test current MIMO systems and to be upgraded as the field develops. Printed circuit boards for a field-programmable gate array (FPGA) based mainboard, 2.4 GHz transceivers and antennas are then designed, embodying the aforementioned architecture. The mainboard uses a Xilinx XC2S600E FPGA, with ∼600,000 logic gates. Hardware is assembled and tested, forming a foundation for further layers of firmware and software. An abstraction layer, with associated test benches, is written in a hardware description language (VHDL), allowing the core logic of the FPGA to be written and simulated in a device-independent manner. Further VHDL is written and the testbed configured to transmit and receive bursts of data. A device driver is implemented, and abstract data types are layered on top of the driver, enabling high-level control of the testbed. Single antenna and MIMO data links are implemented using 1x1 binary phase-shift keying (BPSK, transmitting space-time coded data packets and producing bit error rate (BER) performance curves. A flexible modular architecture is designed, able to test current MIMO systems and to be upgraded as the field develops. Printed circuit boards for a field-programmable gate array (FPGA) based mainboard, 2.4 GHz transceivers and antennas are then designed, embodying the aforementioned architecture. The mainboard uses a Xilinx XC2S600E FPGA, with ∼600,000 logic gates. Hardware is assembled and tested, forming a foundation for further layers of firmware and software. An abstraction layer, with associated test benches, is written in a hardware description language (VHDL), allowing the core logic of the FPGA to be written and simulated in a device-independent manner. Further VHDL is written and the testbed configured to transmit and receive bursts of data. A device driver is implemented, and abstract data types are layered on top of the driver, enabling high-level control of the testbed. Single antenna and MIMO data links are implemented using 1x1 binary phase-shift keying (BPSK, 2009, University of Newcastle

URL: http://hdl.handle.net/1959.13/41758

►

Masters Research - Master of Engineering

This thesis demonstrates the process of building a system to test multiple-input multiple-output (MIMO) communications over-the-air. It covers the… (more)

▼

Masters Research - Master of Engineering

This thesis demonstrates the process of building a system to test multiple-input multiple-output (MIMO) communications over-the-air. It covers the entire process, from concept to design and construction, culminating in transmitting space-time coded data packets and producing bit error rate (BER) performance curves. A flexible modular architecture is designed, able to test current MIMO systems and to be upgraded as the field develops. Printed circuit boards for a field-programmable gate array (FPGA) based mainboard, 2.4 GHz transceivers and antennas are then designed, embodying the aforementioned architecture. The mainboard uses a Xilinx XC2S600E FPGA, with ∼600,000 logic gates. Hardware is assembled and tested, forming a foundation for further layers of firmware and software. An abstraction layer, with associated test benches, is written in a hardware description language (VHDL), allowing the core logic of the FPGA to be written and simulated in a device-independent manner. Further VHDL is written and the testbed configured to transmit and receive bursts of data. A device driver is implemented, and abstract data types are layered on top of the driver, enabling high-level control of the testbed. Single antenna and MIMO data links are implemented using 1x1 binary phase-shift keying (BPSK) and 2x2 Alamouti encoded BPSK modulation respectively. Finally, data packets are transmitted and measured BER performance curves constructed. Channel estimation is proved to work on a 2x2 MIMO channel over-the-air, the introduced loss of Eb/N0 shown to be approximately 0.5 dB compared to perfect channel information. The analogue limitations of the hardware are investigated and bit error rate performance measured as a function of operating point. Finally single antenna communications and a 2x2 Alamouti MIMO scheme are compared over-the-air, the Alamouti scheme delivering a 3 dB improvement in Eb/N0 performance. Satisfyingly the MIMO scheme also exceeds the best case theoretical performance bound of the single antenna case by a margin of 2 dB in Eb/N0.

Advisors/Committee Members: University of Newcastle. Faculty of Engineering and Built Environment, School of Electrical Engineering and Computer Science.

Subjects/Keywords: FPGA; field programmable gate array; smart antenna communications; MIMO; multiple-input mulitiple-output

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dalton, J. (2009). A reconfigurable prototyping system for multiple-input multiple-output communications. (Masters Thesis). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/41758

Chicago Manual of Style (16^th Edition):

Dalton, John. “A reconfigurable prototyping system for multiple-input multiple-output communications.” 2009. Masters Thesis, University of Newcastle. Accessed January 19, 2021. http://hdl.handle.net/1959.13/41758.

MLA Handbook (7^th Edition):

Dalton, John. “A reconfigurable prototyping system for multiple-input multiple-output communications.” 2009. Web. 19 Jan 2021.

Vancouver:

Dalton J. A reconfigurable prototyping system for multiple-input multiple-output communications. [Internet] [Masters thesis]. University of Newcastle; 2009. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1959.13/41758.

Council of Science Editors:

Dalton J. A reconfigurable prototyping system for multiple-input multiple-output communications. [Masters Thesis]. University of Newcastle; 2009. Available from: http://hdl.handle.net/1959.13/41758

University of Oulu

24. Apilo, O. (Olli). Energy efficiency analysis and improvements of MIMO cellular communications.

Degree: 2020, University of Oulu

URL: http://urn.fi/urn:isbn:9789526227566

►

Abstract This thesis focuses on the energy efficiency of multiple-input multiple-output (MIMO) cellular communications. Energy efficiency has been set as one of the main major… (more)

▼

Abstract This thesis focuses on the energy efficiency of multiple-input multiple-output (MIMO) cellular communications. Energy efficiency has been set as one of the main major objectives for modern cellular networks. According to the requirements of the 5th Generation wireless system (5G), energy consumption should not increase from the level of the current networks even though the amount of data in 5G networks is expected to be significantly higher. This thesis contributes in its part to the energy efficiency target by providing tools and methods for analyzing the link energy efficiency as well as proposing energy efficiency improvements for MIMO base stations. The majority of conventional macro base station input power is consumed by its power amplifiers (PAs). Average PA efficiency measures how efficiently the direct current (DC) input power is converted to radio frequency (RF) output power. The average PA efficiency of power-adaptive spatial diversity methods is analyzed and a new metric, PA input signal-to-noise ratio (SNR), is proposed in this thesis. Bit error rate as a function of average PA input SNR captures the effect of the PA nonideal efficiency to the link performance analysis. It is shown that power-adaptive transmission methods, which are optimal with ideal PAs, should be replaced with constant power transmission methods when low efficiency PAs are used. Massive MIMO and coordinated multi-point (CoMP) have been proposed for modern base stations for improving the area spectral efficiency. A dynamic point selection (DPS) method with a static intercell agreement on the transmission point (TP) activity pattern is proposed for CoMP and distributed antenna systems. The proposed DPS method achieves significant energy efficiency gain over closed-loop spatial multiplexing with the same level of cell edge spectral efficiency. Unequal PA dimensioning and cell splitting combined with the adaptation of the number of antennas is proposed for massive MIMO base stations with digital beamforming. It is shown that unequal PA dimensioning can reduce the PA power consumption without any negative effect on the data rates. When a small reduction in the cell sum rate is acceptable, cell splitting is a very promising method that can achieve a significant energy efficiency improvement.

Tiivistelmä Tässä väitöskirjassa keskitytään MIMO-tiedonsiirron energiatehokkuuteen mobiiliverkoissa. Energiatehokkuus on asetettu yhdeksi päätavoitteeksi moderneissa mobiiliverkoissa. 5G-vaatimusten mukaan energiankulutus ei saisi nousta nykyisten tietoliikenneverkkojen tasosta, vaikka datan määrä 5G-verkoissa tuleekin olemaan huomattavasti suurempi. Tämä väitöskirja koettaa auttaa näiden tavoitteiden saavuttamisessa tarjoamalla menetelmiä ja työkalujen linkin energiatehokkuuden analysointiin sekä ehdottamalla parannuksia MIMO-tukiasemille. Tehovahvistimet kuluttavat suurimman osan tavallisten makrotukiasemien tehosta. Tehovahvistimen keskimääräinen hyötysuhde mittaa, kuinka tehokkaasti sisään tuleva DC-teho muutetaan lähetettäväksi…

Advisors/Committee Members: Mämmelä, A. (Aarne), Iinatti, J. (Jari).

Subjects/Keywords: dynamic point selection (DPS); energy efficiency; massive MIMO; multiple-input multiple-output (MIMO); power amplifier (PA) efficiency; DPS; MIMO-tiedonsiirto; energiatehokkuus; massiivi-MIMO; tehovahvistimen hyötysuhde

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Apilo, O. (. (2020). Energy efficiency analysis and improvements of MIMO cellular communications. (Doctoral Dissertation). University of Oulu. Retrieved from http://urn.fi/urn:isbn:9789526227566

Chicago Manual of Style (16^th Edition):

Apilo, O (Olli). “Energy efficiency analysis and improvements of MIMO cellular communications.” 2020. Doctoral Dissertation, University of Oulu. Accessed January 19, 2021. http://urn.fi/urn:isbn:9789526227566.

MLA Handbook (7^th Edition):

Apilo, O (Olli). “Energy efficiency analysis and improvements of MIMO cellular communications.” 2020. Web. 19 Jan 2021.

Vancouver:

Apilo O(. Energy efficiency analysis and improvements of MIMO cellular communications. [Internet] [Doctoral dissertation]. University of Oulu; 2020. [cited 2021 Jan 19]. Available from: http://urn.fi/urn:isbn:9789526227566.

Council of Science Editors:

Apilo O(. Energy efficiency analysis and improvements of MIMO cellular communications. [Doctoral Dissertation]. University of Oulu; 2020. Available from: http://urn.fi/urn:isbn:9789526227566

NSYSU

25. Yeh, Po-Hsuan. Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO.

Degree: Master, Communications Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0803113-161818

► In this thesis, we propose an interference-superimposing user selection scheme for uplink multiuser multiple-input multiple-output (MU-MIMO) systems in a multicell environment. The proposed scheme works… (more)

Subjects/Keywords: multi-user multiple-input-multiple-output(MU-MIMO); inter-cell interference; low-complexity; Distributed; user selection

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yeh, P. (2013). Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0803113-161818

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yeh, Po-Hsuan. “Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO.” 2013. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0803113-161818.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yeh, Po-Hsuan. “Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO.” 2013. Web. 19 Jan 2021.

Vancouver:

Yeh P. Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0803113-161818.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yeh P. Investigation on Distributed User Selection for Uplink Multicell Systems with MIMO. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0803113-161818

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

26. Wang, Meng-jie. Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI.

Degree: Master, Communications Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727116-185220

► Massive multiple-input multiple-output (MIMO) systems provide large spatial degrees of freedom such that the influence caused by small-scale fading is diminished, greatly simplifying the design.… (more)

Subjects/Keywords: approximate message passing (AMP); channel estimation error; Massive multiple-input multiple-output (massive MIMO); spatial modulation (SM); RF impairments

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, M. (2016). Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727116-185220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Meng-jie. “Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI.” 2016. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727116-185220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Meng-jie. “Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI.” 2016. Web. 19 Jan 2021.

Vancouver:

Wang M. Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727116-185220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang M. Message Passing Data Detection for Generalized Spatial Modulation Large-scale Multiuser MIMO Systems in Presence of Transmit Impairments and Imperfect CSI. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727116-185220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

27. Chung, Jhih-Yu. Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems.

Degree: Master, Communications Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0917116-152128

► In this thesis, we study the time-varying channel estimation problem for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. Resorting to complex exponential basis… (more)

Subjects/Keywords: Multiple-input multiple-output (MIMO); orthogonal frequency division multiplexing (OFDM); time-varying channel; basis expansion model (BEM); recursive least-squares (RLS)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chung, J. (2016). Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0917116-152128

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chung, Jhih-Yu. “Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems.” 2016. Thesis, NSYSU. Accessed January 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0917116-152128.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chung, Jhih-Yu. “Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems.” 2016. Web. 19 Jan 2021.

Vancouver:

Chung J. Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Jan 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0917116-152128.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chung J. Study on Recursive Least-Square Channel Estimation via Basis Expansion Model in MIMO-OFDM Systems. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0917116-152128

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Hottinen, Ari. Linear Space-Time Modulation in Multiple-Antenna Channels.

Degree: 2004, Helsinki University of Technology

URL: http://lib.tkk.fi/Diss/2004/isbn9512273764/

► This thesis develops linear space–time modulation techniques for (multi-antenna) multi-input multi-output (MIMO) and multiple-input single-output (MISO) wireless channels. Transmission methods tailored for such channels have… (more)

Subjects/Keywords: space-time coding; modulation; multiple-input multiple-output (MIMO) channel; open-loop transmission; closed-loop transmission

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hottinen, A. (2004). Linear Space-Time Modulation in Multiple-Antenna Channels. (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2004/isbn9512273764/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hottinen, Ari. “Linear Space-Time Modulation in Multiple-Antenna Channels.” 2004. Thesis, Helsinki University of Technology. Accessed January 19, 2021. http://lib.tkk.fi/Diss/2004/isbn9512273764/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hottinen, Ari. “Linear Space-Time Modulation in Multiple-Antenna Channels.” 2004. Web. 19 Jan 2021.

Vancouver:

Hottinen A. Linear Space-Time Modulation in Multiple-Antenna Channels. [Internet] [Thesis]. Helsinki University of Technology; 2004. [cited 2021 Jan 19]. Available from: http://lib.tkk.fi/Diss/2004/isbn9512273764/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hottinen A. Linear Space-Time Modulation in Multiple-Antenna Channels. [Thesis]. Helsinki University of Technology; 2004. Available from: http://lib.tkk.fi/Diss/2004/isbn9512273764/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

29. Isaque Suzuki. Detecção quase-ótima e diversidade em sistemas de comunicação móveis.

Degree: 2009, Universidade Estadual de Londrina

URL: http://www.bibliotecadigital.uel.br/document/?code=vtls000149152

►

Este trabalho de investigação tem por objetivo analisar, quantificar e comparar o desempenho e a complexidade de detectores codificados e não-codificados quase-ótimos em sistemas de… (more)

▼

Este trabalho de investigação tem por objetivo analisar, quantificar e comparar o desempenho e a complexidade de detectores codificados e não-codificados quase-ótimos em sistemas de comunicação sem fio de múltiplas entradas e múltiplas saídas (MIMO - Multiple-Input Multiple-Output). Um esquema de detecção MIMO de mesmo desempenho do detector de máxima verossimilhança (ML - Maximum Likelihood), porém de menor complexidade baseado na identificação de padrões, denominado clusters, contitui uma das contribuições deste trabalho, tendo sido analisado teoricamente e caracterizado extensivamente por meio de resultados de simulação Monte Carlo. Adicionalmente, o trabalho investiga esquemas de detecção MIMO quase-ótimos adequados para canais MIMO determinados e indeterminados. Agregando-se a técnica de formação de sub-arranjos de antenas, combinada à codificação espaço-temporal quase ortogonal, foram especificadas estruturas de detecção MIMO cuja figura de mérito consistiu no compromisso desempenho-complexidade. Tais análises foram conduzidas levando-se em conta tanto canais de comunicação sem fio derivados de variávies aleatórias independentes e identicamente distribuídas (i.i.d. - independent and identically-distributed), quanto canais descritos por meio do modelo de Jakes modificado com estimativas perfeitas e imperfeitas de canal.

This work aims to analyze, quantify and compare the performance and complexity of coded and non-coded near-optimal detectors in wireless communication systems with multiple inputs and multiple outputs (MIMO). The main contribution of this work is a new MIMO detection scheme with ML-performance and lower complexity. It is based on repeating patterns called clusters and have been theoretically analyzed and extensively characterized by Monte Carlo simulation results. Additionally, it investigates near-optimal MIMO detection schemes suitable for determined and indetermined MIMO channels. MIMO detection structures were specified by adding antenna subarray formation and space-time coding allowing us to balance between performance and complexity. All simulation were conducted using i.i.d. channel and modified Jakes channel model with both perfect and imperfect estimation.

Advisors/Committee Members: Taufik Abrão ., Fábio Renan Durand, Mario Lemes Proença Jr, José Carlos Pizolato Junior.

Subjects/Keywords: Sistema de comunicação sem fio; Detecção ML quase-ótima; Processamento de sinais; Wireless communication systems; MIMO - Multiple - Input multiple - output

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Suzuki, I. (2009). Detecção quase-ótima e diversidade em sistemas de comunicação móveis. (Thesis). Universidade Estadual de Londrina. Retrieved from http://www.bibliotecadigital.uel.br/document/?code=vtls000149152

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Suzuki, Isaque. “Detecção quase-ótima e diversidade em sistemas de comunicação móveis.” 2009. Thesis, Universidade Estadual de Londrina. Accessed January 19, 2021. http://www.bibliotecadigital.uel.br/document/?code=vtls000149152.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Suzuki, Isaque. “Detecção quase-ótima e diversidade em sistemas de comunicação móveis.” 2009. Web. 19 Jan 2021.

Vancouver:

Suzuki I. Detecção quase-ótima e diversidade em sistemas de comunicação móveis. [Internet] [Thesis]. Universidade Estadual de Londrina; 2009. [cited 2021 Jan 19]. Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000149152.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Suzuki I. Detecção quase-ótima e diversidade em sistemas de comunicação móveis. [Thesis]. Universidade Estadual de Londrina; 2009. Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000149152

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

30. Butala, Pankil Mukund. Optical MIMO communication systems under illumination constraints.

Degree: PhD, Electrical & Computer Engineering, 2015, Boston University

URL: http://hdl.handle.net/2144/15710

► Technology for wireless information access has enabled innovation of 'smart' portable consumer devices. These have been widely adopted and have become an integral part of… (more)

▼ Technology for wireless information access has enabled innovation of 'smart' portable consumer devices. These have been widely adopted and have become an integral part of our daily lives. They need ubiquitous connectivity to the internet to provide value added services, maximize their functionality and create a smarter world to live in. Cisco's visual networking index currently predicts wireless data consumption to increase by 61% per year. This will put additional stress on the already stressed wireless access network infrastructure creating a phenomenon called 'spectrum crunch'. At the same time, the solid state devices industry has made remarkable advances in energy efficient light-emitting-diodes (LED). The lighting industry is rapidly adopting LEDs to provide illumination in indoor spaces. Lighting fixtures are positioned to support human activities and thus are well located to act as wireless access points. The visible spectrum (380 nm - 780 nm) is yet unregulated and untapped for wireless access. This provides unique opportunity to upgrade existing lighting infrastructure and create a dense grid of small cells by using this additional 'optical' wireless bandwidth. Under the above model, lighting fixtures will service dual missions of illumination and access points for optical wireless communication (OWC). This dissertation investigates multiple-input multiple-output (MIMO) optical wireless broadcast system under unique constraints imposed by the optical channel and illumination requirements. Sample indexed spatial orthogonal frequency division multiplexing (SIS-OFDM) and metameric modulation (MM) are proposed to achieve higher spectral efficiency by exploiting dimensions of space and color respectively in addition to time and frequency. SIS-OFDM can provide significant additional spectral efficiency of up to (Nsc/2 - 1) x k bits/sym where Nsc is total number of subcarriers and k is number of bits per underlying spatial modulation symbol. MM always generates the true requested illumination color and has the potential to provide better color rendering by incorporating multiple LEDs. A normalization framework is then developed to analyze performance of optical MIMO imaging systems. Performance improvements of up to 45 dB for optical systems have been achieved by decorrelating spatially separate links by incorporating an imaging receiver. The dissertation also studies the impact of visual perception on performance of color shift keying as specified in IEEE 802.15.7 standard. It shows that non-linearity for a practical system can have a performance penalty of up to 15 dB when compared to the simplified linear system abstraction as proposed in the standard. Luminous-signal-to-noise ratio, a novel metric is introduced to compare performance of optical modulation techniques operating at same illumination intensity. The dissertation then introduces singular value decomposition based OWC system architecture to incorporate illumination constraints independent of communication constraints in a MIMO system. It then…

Subjects/Keywords: Electrical engineering; Free space communication (FSC); Imaging receiver; Multiple input multiple output (MIMO); Optical wireless communication (OWC); Visible light communication (VLC)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Butala, P. M. (2015). Optical MIMO communication systems under illumination constraints. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/15710

Chicago Manual of Style (16^th Edition):

Butala, Pankil Mukund. “Optical MIMO communication systems under illumination constraints.” 2015. Doctoral Dissertation, Boston University. Accessed January 19, 2021. http://hdl.handle.net/2144/15710.

MLA Handbook (7^th Edition):

Butala, Pankil Mukund. “Optical MIMO communication systems under illumination constraints.” 2015. Web. 19 Jan 2021.

Vancouver:

Butala PM. Optical MIMO communication systems under illumination constraints. [Internet] [Doctoral dissertation]. Boston University; 2015. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2144/15710.

Council of Science Editors:

Butala PM. Optical MIMO communication systems under illumination constraints. [Doctoral Dissertation]. Boston University; 2015. Available from: http://hdl.handle.net/2144/15710

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations