CODING AND MODULATION SCHEMES FOR SLOW FADING CHANNELS

被引：6

作者：

GAGNON, F ^{[1
]}

HACCOUN, D ^{[1
]}

机构：

[1] ECOLE POLYTECH,DEPT ELECT & COMP ENGN,MONTREAL,PQ H3C 3A7,CANADA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 1995年 / 43卷 / 2-4期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1109/26.380118

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two new schemes are presented to improve the error performances of coding and modulation on slow fading channels. The first scheme consists of permuting coordinates of multidimensional modulation and trellis coded modulation (TCM) on interleaved channels. Theoretical and simulation results show that this simple permutation may provide gains of 3.8 dB on slow Rayleigh fading channels for uncoded modulation. It also improves by 5 dB the performance of fully interleaved 16-QAM TCM. The second scheme consists of using coded frequency diversity. Without bandwidth expansion, the signal is spread over different independent fading channels. For two very slow fading channels, where interleaving is impractical and coding usually does not provide any gain, coded diversity and 16-QAM TCM provides gains of 13 dB at a BER of 10(-4).

引用

下载

页码：858 / 868

页数：11

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