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You searched for +publisher:"Rutgers University" +contributor:("Sannuti, Peddapullaiah "). Showing records 1 – 3 of 3 total matches.

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Rutgers University

1. Vaz, Canute. Estimation and equalization of communications channels using wavelet transforms:.

Degree: PhD, Electrical and Computer Engineering, 2010, Rutgers University

This dissertation features the development of signal processing strategies for the estimation of the impulse responses of channels and the equalization of the effects of channels on communications signals propagating through them using the Discrete Wavelet Transform (DWT). The two strategies are developed as part of a wavelet-based signal processing platform, which can be used to enable reconfigurable radio transceivers. In broad terms, the approach that is taken is to recast standard discrete time-domain signal processing procedures into a DWT-based framework. To facilitate this, three equivalent techniques of DWT-based convolution are devised. The techniques are described analytically using a systems-theoretic approach. The convolution techniques use both standard subband coding as well as polyphase filter implementations. Consequent to the development of DWT-based convolution is a DWT-based deconvolution procedure that is derived analytically. The deconvolution procedure is then applied to the problem of the estimation of several time-invariant multipath communications channels. Conditions of slow and fast fading are considered, and faded test signals are also subjected to Additive White Gaussian Noise (AWGN) that result in ratios of bit-energy-to-noise-power-density, Eb/N0, in the range of 0 to 60 dB. Monte Carlo simulations of the estimation of the channel impulse responses yield Mean-Square Error (MSE) results with excellent statistical agreement even for coarse levels of DWT resolution when compared with standard discrete time-domain deconvolution. Using DWT-based convolution the linear equalization techniques of Zero Forcing Equalization (ZFE) and Minimum Mean-Squared Error (MMSE) equalization, are formulated and implemented in the wavelet-domain. Monte Carlo simulations of the equalization of a fast fading channel with Eb/N0 in the range from 0 dB to 60 dB show that the performance of both linear equalizers in the time and wavelet-domains is essentially identical. Allied with the primary objective of the dissertation, both DWT-based channel estimation and equalization are included in communications systems. In Monte Carlo simulations of these systems, signals that are digitally modulated with the Binary Amplitude Shift Keying (BASK), Binary Frequency Shift Keying (BFSK) and 16-Quadrature Amplitude Modulation (16-QAM) schemes are propagated through a fast fading channel. The faded signals are subjected to AWGN resulting in Eb/N0 in the range from 0 dB to 20 dB. The performance of these hybrid time- and DWT-based communications systems is evaluated with Symbol Error Rate (SER) curves that show no decrease in performance when compared with discrete time-domain system methods.

Advisors/Committee Members: Vaz, Canute (author), Daut, David (chair), McAfee, Sigrid (internal member), Orfanidis, Sophocles (internal member), Sannuti, Peddapullaiah (internal member), Chant, Robert, (outside member).

Subjects/Keywords: Signal processing; Wavelets (Mathematics)

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

APA (6th Edition):

Vaz, C. (2010). Estimation and equalization of communications channels using wavelet transforms:. (Doctoral Dissertation). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052157

Chicago Manual of Style (16th Edition):

Vaz, Canute. “Estimation and equalization of communications channels using wavelet transforms:.” 2010. Doctoral Dissertation, Rutgers University. Accessed November 13, 2019. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052157.

MLA Handbook (7th Edition):

Vaz, Canute. “Estimation and equalization of communications channels using wavelet transforms:.” 2010. Web. 13 Nov 2019.

Vancouver:

Vaz C. Estimation and equalization of communications channels using wavelet transforms:. [Internet] [Doctoral dissertation]. Rutgers University; 2010. [cited 2019 Nov 13]. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052157.

Council of Science Editors:

Vaz C. Estimation and equalization of communications channels using wavelet transforms:. [Doctoral Dissertation]. Rutgers University; 2010. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052157

2. Ayyer, Shriniwas, 1988-. Evaluation of passive RFID system in a dynamic work environment.

Degree: MS, Electrical and Computer Engineering, 2012, Rutgers University

RFID has been one of the most widely used sensing technologies. Due to its ease of integration, low cost and minimal system intervention required, a lot of domains are deploying RFID for their applications. A major market of RFID technology applications has been the inventory and tracking application. The data obtained from RFID, however, also contains high level of information in it, which can be used and exploited for sensing applications like localization, motion detection, activity recognition, etc. Despite, the widespread use of RFID, there are some technical shortcomings and lack of a system design approach which hinders the performance of RFID systems in dynamic and critical settings. Our goal is to introduce the Passive RFID technology in a dynamic work environment like the Trauma Resuscitation Bay as part of a context-aware system to support activity recognition. Mobility of an object is closely related to its usage and hence the activity being performed. Detecting mobility of an object using passive RFID technology is the first step towards activity recognition. The deployment of the RFID system and the placement of the antennas play a crucial role in the performance of their sensing application. In this work, we have devised a method to determine the effectiveness of an RFID equipment setup. We have analyzed different RFID setups and we discuss the metrics used to determine their effectiveness. We conducted experiments with different scenarios to collect the data and evaluated the performance of a setup in each scenario. The results obtained helped us to correlate the RFID setup with its detection performance. We also ran a classification algorithm on the data collected and evaluated the object motion detection accuracy for all the set ups. Our work provides a ground rule for the RFID set up requirements to be considered for detection applications and also provides insights into the features that can be used for state classification of objects using the RFID data. Advisors/Committee Members: Ayyer, Shriniwas, 1988- (author), Marsic, Ivan (chair), Wilder, Joseph (internal member), Sannuti, Peddapullaiah (internal member).

Subjects/Keywords: Radio frequency identification systems – Performance

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

APA (6th Edition):

Ayyer, Shriniwas, 1. (2012). Evaluation of passive RFID system in a dynamic work environment. (Masters Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000066604

Chicago Manual of Style (16th Edition):

Ayyer, Shriniwas, 1988-. “Evaluation of passive RFID system in a dynamic work environment.” 2012. Masters Thesis, Rutgers University. Accessed November 13, 2019. http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000066604.

MLA Handbook (7th Edition):

Ayyer, Shriniwas, 1988-. “Evaluation of passive RFID system in a dynamic work environment.” 2012. Web. 13 Nov 2019.

Vancouver:

Ayyer, Shriniwas 1. Evaluation of passive RFID system in a dynamic work environment. [Internet] [Masters thesis]. Rutgers University; 2012. [cited 2019 Nov 13]. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000066604.

Council of Science Editors:

Ayyer, Shriniwas 1. Evaluation of passive RFID system in a dynamic work environment. [Masters Thesis]. Rutgers University; 2012. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000066604


Rutgers University

3. Weitzner, Andrew Todd. Combined source-channel coding using multilevel/phase modulation.

Degree: MS, Electrical Engineering, 1988, Rutgers University

A combined source-channel coding and modulation approach is implemented for the encoding, transmission and remote reconstruction of a first-order one-dimensional Gauss-Markov source described by the correlation coefficient ρ. The source encoder employs differential pulse code modulation (DPCM). This is an efficient encoding scheme in the absence of channel errors. However, DPCM degrades rapidly in the presence of channel errors. Trellis-Coded Modulation is used to provide error protection without incurring a bandwidth expansion. This is accomplished by using m-bit DPCM with a rate m/(m + 1) trellis code and a 2m+1-ary modulation technique such as multiple phase-shift keying (MPSK) or quadrature amplitude modulation (QAM). The trellis codes used are those developed by Ungerboeck. Performance of the overall system is evaluated on a mean square reconstructed error (MSRE) versus channel signal-to-noise ratio (SNRin) criterion for an AWGN Channel. The system performance is increased by 3 to 7 dB as compared to an uncoded system and results are within 1.0 to 2.3 dB of the R0 bound. The technique demonstrates an effective bandwidth efficient means for transmitting source encoded date represented by more than one bit per source symbol which has not been previously demonstrated in the technical literature. Advisors/Committee Members: Daut, David G. (chair), Sannuti, Peddapullaiah (internal member), Lawrence, Victor B. (outside member).

Subjects/Keywords: Modulation (Electronics); Coding theory

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

APA (6th Edition):

Weitzner, A. T. (1988). Combined source-channel coding using multilevel/phase modulation. (Masters Thesis). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/50156/

Chicago Manual of Style (16th Edition):

Weitzner, Andrew Todd. “Combined source-channel coding using multilevel/phase modulation.” 1988. Masters Thesis, Rutgers University. Accessed November 13, 2019. https://rucore.libraries.rutgers.edu/rutgers-lib/50156/.

MLA Handbook (7th Edition):

Weitzner, Andrew Todd. “Combined source-channel coding using multilevel/phase modulation.” 1988. Web. 13 Nov 2019.

Vancouver:

Weitzner AT. Combined source-channel coding using multilevel/phase modulation. [Internet] [Masters thesis]. Rutgers University; 1988. [cited 2019 Nov 13]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/50156/.

Council of Science Editors:

Weitzner AT. Combined source-channel coding using multilevel/phase modulation. [Masters Thesis]. Rutgers University; 1988. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/50156/

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