Blind Channel Estimation and Multiuser Detection for Multi-Rate CDMA Communications

267 652 270 5 2322 document 270 02whole.pdf application/pdf 706250 2011-09-09 10:20:00 https://vuir.vu.edu.au/267/1/02whole.pdf 267 1 application/pdf text en public

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http://eprints.org/relation/isVersionOf https://vuir.vu.edu.au/id/dark_document/66358 http://eprints.org/relation/isVolatileVersionOf https://vuir.vu.edu.au/id/dark_document/66358 http://eprints.org/relation/issmallThumbnailVersionOf https://vuir.vu.edu.au/id/dark_document/66358 archive 34 disk0/00/00/02/67 2006-02-16 2021-08-27 07:39:12 2008-08-19 19:33:26 thesis show Huang Lei Huang, Lei Blind Channel Estimation and Multiuser Detection for Multi-Rate CDMA Communications unpub 290000 tafeengineering wireless communications; users; applications; single-carrier; multicarrier The future wireless communications systems should be able to offer wide variety of applications, which have vastly different quality of service (QoS) requirements. The time-variable QoS may require the support of variable bit rates on the wireless links to the individual users. Multi-rate DS/CDMA is a promising basis on which to support the variable bit rates on the individual wireless links. Currently, the study on channel estimation and multiuser detection for multi-rate DS/CDMA, which makes full use of the nature of multi-rate signals, is still at its early stage. The thesis deals with the application of subspace-based techniques to blind channel estimation and multiuser detection for multi-rate DS/CDMA, including single-carrier and multicarrier scenarios. For the single-carrier case, space-time blind linear multiuser detection is investigated for synchronous dual-rate systems over the AWGN channel. The performance is evaluated analytically. The multi-rate generalization and the asynchronous extension are discussed. Two-stage space-time dual-rate blind detectors are also presented. Furthermore, blind adaptive channel estimation and detection schemes for asynchronous dual-rate systems over frequency-selective multipath channels are developed. In the context of multicarrier DS/CDMA, based on a finite-length truncation approximation on the band-limited chip waveform, blind timing acquisition and channel estimation scheme is proposed for multi-rate systems. The channel estimation error due to the finite-length chip waveform truncation is analyzed by exploiting a first-order perturbation approximation. 2003 published 66358 2 2404404 dark_document 66358 Huang, Lei.pdf application/pdf 072743adeab501b1d056c123c111b3d6 MD5 26236 2020-10-01 04:45:00 267 3 3 application/pdf text VURR permission form en staffonly

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other public 136 Victoria University Faculty of Business and Law phd FALSE