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Title: Some Investigations on Multiuser detection for CDMA systems
Researcher: Rekha Agarwal
Guide(s): K.K. Aggarwal and B.V.R. Reddy
University: Guru Gobind Singh Indraprastha University
Completed Date: 2007
Abstract: Over the last few years, wireless cellular communications has experienced rapid growth in the demand for provision of high data rate wireless multimedia services. This fact motivates the need to find ways to improve the spectrum efficiency of wireless communication systems. However, in order to achieve this promised high capacity, good techniques are needed to overcome several wireless impairments such as fading and multiuser interference. This is why significant research work is currently being devoted to improve the performance of Direct Sequence Code Division Multiple Access (DS-CDMA) systems using different techniques, such as interference cancellation or multiuser detection (MUD), smart antenna and power control. Among these areas of research, multiuser detection is one of the most crucial aspects because it plays an important role in DS-CDMA systems. The aim of this study is to contribute to this important research area by studying existing multiuser detection algorithms, suggesting ways to use these methods practically at reduced complexity. Code Division Multiple Access (CDMA) is chosen as the platform for this thesis work since it has been adopted as the air-interface technology by the Third Generation (3G) wireless communication systems. Also, smart or adaptive antennas have also emerged as a promising technology to enhance the spectrum efficiency of present and future wireless communications systems by exploiting the spatial domain. Further, all future generation systems are required to support multiple data rates with good quality of service. These aspects are studied.
Appears in Departments:University School of Information and Communication Technology

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02_dedicate.pdf15.18 kBAdobe PDFView/Open
03_certificate.pdf9.39 kBAdobe PDFView/Open
04_abstract.pdf17.87 kBAdobe PDFView/Open
05_acknowledgement.pdf11.32 kBAdobe PDFView/Open
06_contents.pdf21.23 kBAdobe PDFView/Open
07_symbols.pdf51.73 kBAdobe PDFView/Open
08-chapter_01.pdf49.2 kBAdobe PDFView/Open
09_chapter_02.pdf122.75 kBAdobe PDFView/Open
10_chapter_03.pdf175.19 kBAdobe PDFView/Open
11_chapter_04.pdf125.36 kBAdobe PDFView/Open
12_chapter_05.pdf180.54 kBAdobe PDFView/Open
13_chapter_06.pdf121.69 kBAdobe PDFView/Open
14_chapter_07.pdf36.17 kBAdobe PDFView/Open
15_bibilography.pdf103.48 kBAdobe PDFView/Open
16_list of papers.pdf17.57 kBAdobe PDFView/Open
17_resume.pdf9.84 kBAdobe PDFView/Open

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