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Iterative Multi-User Detection and Decoding for DS-CDMA System with Space-Timer Linear Dispersion

Xiao, P, Wu, J, Sellathurai, M, Ratnarajah, T and Strom, E (2009) Iterative Multi-User Detection and Decoding for DS-CDMA System with Space-Timer Linear Dispersion IEEE Transactions on Vehicular Technology, 58 (5). 2343 - 2353. ISSN 0018-9545

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Abstract

This paper considers a Q-ary orthogonal direct-sequence code-division multiple-access (DS-CDMA) system with high-rate space-time linear dispersion codes (LDCs) in time-varying Rayleigh fading multiple-input-multiple-output (MIMO) channels. We propose a joint multiuser detection, LDC decoding, Q-ary demodulation, and channel-decoding algorithm and apply the turbo processing principle to improve system performance in an iterative fashion. The proposed iterative scheme demonstrates faster convergence and superior performance compared with the V-BLAST-based DS-CDMA system and is shown to approach the single-user performance bound. We also show that the CDMA system is able to exploit the time diversity offered by the LDCs in rapid-fading channels.

Item Type: Article
Additional Information: © 2009 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: Code-division multiple access (CDMA) , iterative detection and decoding , linear dispersion codes (LDCs) , multiple-input–multiple-output (MIMO) , multiuser detection (MUD)
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Depositing User: Symplectic Elements
Date Deposited: 09 Mar 2012 12:43
Last Modified: 23 Sep 2013 19:18
URI: http://epubs.surrey.ac.uk/id/eprint/290585

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