Global ETD Search

81	Design and performance evaluation of a full rate, full diversity space-time-spreading code for an arbitrary number of Tx antennas Maasdorp, Francois de Villiers. January 2008 (has links) Thesis (MEng (Electronic))-University of Pretoria, 2008. / Includes bibliographical references.
82	Performance of the multicarrier direct sequence spread spectrum uplink in the presence of frequency and timing synchronization errors / Házy, László, January 1900 (has links) Thesis (Ph.D.) - Carleton University, 2002. / Includes bibliographical references (p. 155-160). Also available in electronic format on the Internet.
83	Rake receiver performance in direct sequence spread spectrum systems operating at high data rates / Adnani, Nikhil, January 1900 (has links) Thesis (Ph. D.)--Carleton University, 2004. / Includes bibliographical references (p. 163-174). Also available in electronic format on the Internet.
84	Multiplexing of interferometric fiber optic sensors for smart structure applications using spread spectrum techniques / Bhatnagar, Mohit, January 1994 (has links) Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 67-68). Also available via the Internet.
85	Analysis of jammer resistant, spread spectrum, VSAT communication scheme for maritime platform using DSCDMA / Aras, Ersin. January 2002 (has links) (PDF) Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Tri T. Ha, Herschel H. Loomis. Includes bibliographical references (p. 77-78). Also available online.
86	Coding-spreading tradeoff in CDMA systems / Bolas, Eduardo J. January 2002 (has links) (PDF) Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Tri T. Ha, Jan E. Tighe, Jovan E. Lebaric. Includes bibliographical references (p. 85). Also available online.
87	Multiuser detection in TH-UWB communication systems Hosseini, Iraj. January 2009 (has links) Thesis (M. Sc.)--University of Alberta, 2009. / Title from pdf file main screen (viewed on Aug. 14, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Communications, Department of Electrical and Computer Engineering, University of Alberta." Includes bibliographical references.
88	Adaptive combined space-time receiver structures for DS-CDMA systems. Legnain, Abdelgader M., Carleton University. Dissertation. Engineering, Systems and Computer. January 2000 (has links) Thesis (Ph. D.)--Carleton University, 2001. / Also available in electronic format on the Internet.
89	Joint scale-lag diversity in mobile wideband communications Margetts, Adam R., January 2005 (has links) Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains xviii, 139 p.; also includes graphics (some col.). Includes bibliographical references (p. 130-139). Available online via OhioLINK's ETD Center
90	Contribuições ao estudo de sistemas opticos de multiplo acesso por divisão de codigos Panaro, Jose Santo Guiscafre 25 February 2005 (has links) Orientador: Celso de Almeida / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação / Made available in DSpace on 2018-08-04T08:17:41Z (GMT). No. of bitstreams: 1 Panaro_JoseSantoGuiscafre_D.pdf: 1026204 bytes, checksum: 40282f66b4b6eda29d96f913e55549ee (MD5) Previous issue date: 2005 / Resumo: O presente trabalho investiga códigos adequados para esquemas CDMA em redes de comunicação por meios ópticos como, por exemplo, fibras ópticas e redes sem fio por infravermelho. O trabalho desenvolve uma base teórica do comportamento de sistemas CDMA em canais unipolares submetidos à interferência estritamente positiva e sinalização binária, e antecipa as suas implicações. Além disso, verifica-se o desempenho de códigos unipolares apropriados para comunicação óptica propostos anteriormente, comparando-os com uma nova classe de códigos ópticos com salto temporal (OTH). Finalmente, para sistemas ópticos de múltiplo acesso por divisão de código (O-CDMA) com códigos de espalhamento ortogonais no tempo e no comprimento de onda, efetua-se uma análise de desempenho para sistemas tanto com sinalização do tipo OOK (on-off keying) quanto OOO (on-off orthogonal keying) / Abstract: This work concerns optical fiber and infrared networks using code-division multiple access techniques. A theoretical basis for the behavior of the unipolar CDMA systems under strictly positive interference and binary signaling is developed, and their consequences are predicted. In addition, the performance of unipolar codes, appropriate for optical communications is verified and compared with a new class of optical timehopping codes (OTH) proposed in this work. Finally, a performance evaluation analysis is done for O-CDMA systems using time and wavelength spreading codes, considering OOK (on-off keying) and OOO (on-off orthogonal keying) / Doutorado / Telecomunicações e Telemática / Doutor em Engenharia Elétrica Comunicação com dispersão de espectro Comunicações óticas Telecomunicações Spread spectrum communications Optical communications Telecommunications

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