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Suboptimal Decoding of Vector Quantization over a Frequency-Selective Rayleigh Fading CDMA Channel
Son X. NGUYEN Ha H. NGUYEN
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.5
pp.1688-1691 Publication Date: 2006/05/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.5.1688 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: code-division multiple access, combined source and channel coding, vector quantization, multiuser detection,
Full Text: PDF(199.9KB)>>
Summary:
The complexity of the optimal decoding for vector quantization (VQ) in code-division multiple access (CDMA) communications prohibits implementation. It was recently shown in [1] that a suboptimal scheme that combines a soft-output multiuser detector and individual VQ decoders provides a flexible tradeoff between decoder's complexity and performance. The work in [1], however, only considers an AWGN channel model. This paper extends the technique in [1] to a frequency-selective Rayleigh fading channel. Simulation results indicate that such a suboptimal decoder also performs very well over this type of channel.
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