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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Official URL: http://dx.doi.org/10.1109/TVT.2008.2008652
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.
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|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|
|Deposited By:||Symplectic Elements|
|Deposited On:||09 Mar 2012 12:43|
|Last Modified:||24 Jan 2013 09:31|
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