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You searched for subject:( MM estimation). Showing records 1 – 2 of 2 total matches.

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Université de Sherbrooke

1. Simard, Joanie. Méthodes de régression robuste .

Degree: 2018, Université de Sherbrooke

Dans le monde d’aujourd’hui, il est très fréquent de vouloir modéliser la relation entre deux ou plusieurs variables. Toutefois, plusieurs expériences sont laissées à l’abandon à cause de la présence systématique de données aberrantes. Ce mémoire portera sur les estimateurs robustes permettant de modéliser des séries de données contenant des valeurs aberrantes, nous aidant ainsi à tirer un maximum d’informations de ces expériences. Dans un premier temps, nous présenterons des estimateurs robustes qui nécessitent l’imposition d’un modèle paramétrique. Ensuite, nous traiterons de l’introduction des copules à ces estimateurs robustes. Finalement, nous présenterons des simulations tirées d’une expérience réelle qui consistait à modéliser le vrai poids d’un porc selon le poids mesuré par une balance, développée au centre de recherche et développement de Sherbrooke, dans l’optique d’améliorer les techniques d’alimentation de précision. Advisors/Committee Members: Bouezmarni, Taoufik (advisor).

Subjects/Keywords: Robuste; M-estimation; S-estimation; MM-estimation; Copule

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APA (6th Edition):

Simard, J. (2018). Méthodes de régression robuste . (Masters Thesis). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/12002

Chicago Manual of Style (16th Edition):

Simard, Joanie. “Méthodes de régression robuste .” 2018. Masters Thesis, Université de Sherbrooke. Accessed July 23, 2019. http://hdl.handle.net/11143/12002.

MLA Handbook (7th Edition):

Simard, Joanie. “Méthodes de régression robuste .” 2018. Web. 23 Jul 2019.

Vancouver:

Simard J. Méthodes de régression robuste . [Internet] [Masters thesis]. Université de Sherbrooke; 2018. [cited 2019 Jul 23]. Available from: http://hdl.handle.net/11143/12002.

Council of Science Editors:

Simard J. Méthodes de régression robuste . [Masters Thesis]. Université de Sherbrooke; 2018. Available from: http://hdl.handle.net/11143/12002

2. Marzi, Zhinus. Millimeter wave picocellular networks: capacity analysis and system design.

Degree: 2018, University of California – eScholarship, University of California

The explosive growth in demand for wireless mobile data, driven by the proliferationof ever more sophisticated handhelds creating and consuming rich multimedia, calls fororders of magnitude increase in the capacity of cellular data networks. Millimeter wavecommunication from picocellular base stations to mobile devices is a particularly promisingapproach for meeting this challenge because of two reasons. First, there is a largeamount of available spectrum, enabling channel bandwidths of the order of Gigahertz(GHz) which are 1-2 orders of magnitude higher than those in existing WiFi and cellularsystems at lower carrier frequencies. Second, the small carrier wavelength enables therealization of highly directive steerable arrays with a large number of antenna elements,in compact form factors, thus significantly enhancing spatial reuse. Hence, we propose toemploy the 60 GHz unlicensed band for basestation to mobile communication in outdoorpicocells.We first investigate the basic feasibility of such networks, showing that 60GHz linksare indeed viable for outdoor applications. For this purpose, we provided link budgetcalculations along with preliminary simulations which show that despite the commonconcerns about higher oxygen absorption and sensitivity to movement and blockage,picocloud architecture provides availability rate of more than 99%.Next, we explore the idea of increasing spatial reuse by shrinking picocells hopingthat interference is no longer the bottleneck given the highly directive antenna arrays atthis band. Our goal is to estimate the achievable capacity for small picocells along an urban canyon. We consider basestations with multiple faces or sectors, each with one or more antenna arrays. Each such array, termed subarray can employ Radio Frequency(RF) beamforming to communicate with one mobile user at a time. We first focus oncharacterization and modeling the inter-cell interference for one subarray on each face.Our analysis provides a strong indication of very large capacity (in the order of Tbps/km)with a few GHz of bandwidth.Following this, we explore the impact of adding multiple subarrays per face. This leadsto intra-cell interference as well as additional inter-cell interference. While the effect ofadditional inter-cell interference can be quantified within our previous framework, intracellinterference has inherently different features that call for new approaches for analysisand design. We propose a cross-layer approach to suppress the intra-cell interference intwo stages: (a) Physical layer (PHY-layer) method which mitigates interference by jointprecoding and power adaptation and (b) Medium Access Control layer (MAC-layer)method which manages the residual interference by optimizing resource allocation. Wethen estimate the capacity gain over conventional LTE cellular networks and establishthat 1000-fold capacity increase is indeed feasible via mm-wave picocellular networks.Lastly, we examine fundamental signal processing challenges associated with channelestimation and tracking for large arrays,…

Subjects/Keywords: Electrical engineering; capacity analysis; channel estimation; interference analysis; mm-wave; picocells; small cells

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

APA (6th Edition):

Marzi, Z. (2018). Millimeter wave picocellular networks: capacity analysis and system design. (Thesis). University of California – eScholarship, University of California. Retrieved from http://www.escholarship.org/uc/item/20v2m273

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

Chicago Manual of Style (16th Edition):

Marzi, Zhinus. “Millimeter wave picocellular networks: capacity analysis and system design.” 2018. Thesis, University of California – eScholarship, University of California. Accessed July 23, 2019. http://www.escholarship.org/uc/item/20v2m273.

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

MLA Handbook (7th Edition):

Marzi, Zhinus. “Millimeter wave picocellular networks: capacity analysis and system design.” 2018. Web. 23 Jul 2019.

Vancouver:

Marzi Z. Millimeter wave picocellular networks: capacity analysis and system design. [Internet] [Thesis]. University of California – eScholarship, University of California; 2018. [cited 2019 Jul 23]. Available from: http://www.escholarship.org/uc/item/20v2m273.

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

Council of Science Editors:

Marzi Z. Millimeter wave picocellular networks: capacity analysis and system design. [Thesis]. University of California – eScholarship, University of California; 2018. Available from: http://www.escholarship.org/uc/item/20v2m273

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

.