Soft-Decision COVQ for Rayleigh-Fading Channels

被引：23

作者：

Alajaji, Fady I. ^{[1
,2
]}

Phamdo, Nam C. ^{[3
]}

机构：

[1] Queens Univ, Dept Math & Stat, Kingston, ON K7L 3N6, Canada

[2] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada

[3] SUNY Stony Brook, Dept Elect Engn, Stony Brook, NY 11794 USA

来源：

IEEE COMMUNICATIONS LETTERS | 1998年 / 2卷 / 06期

关键词：

Combined source-channel coding; COVQ; soft-decision decoding; Rayleigh-fading channels;

D O I：

10.1109/4234.681359

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A channel-optimized vector quantizer (COVQ) scheme that exploits the channel soft-decision information is proposed. The scheme is designed for stationary memoryless Gaussian and Gauss-Markov sources transmitted over BPSK-modulated Rayleigh-fading channels. It is demonstrated that substantial coding gains (2-3 dB in channel signal-to-noise ratio (SNR) and 1-1.5 dB in source signal-to-distortion ratio (SDR) can be achieved over COVQ systems designed for discrete (hard-decision demodulated) channels.

引用

页码：162 / 164

页数：3

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