级联编码在OFDM系统中性能分析  

Performance Analysis of Cascaded Code in OFDM System

作　　者：徐志广[1,2] 朱磊基[1] 汪涵[1] 施玉松[1,2] 邢涛[1,3] 王营冠[1,2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]中国科学院嘉兴无线传感网工程中心,浙江嘉兴314006 [3]无锡物联网产业研究院,江苏无锡214135

出　　处：《现代电子技术》2011年第17期116-118,共3页Modern Electronics Technique

基　　金：国家重大科技专项(2009ZX03006-004);无锡政产学研合作计划(重大创新载体)(CYWL0906)

摘　　要：将RS编码与卷积编码通过交织器连接,级联应用于OFDM系统之中。通过Matlab仿真显示,级联编码对OFDM系统性能有显著提高。在中低信噪比时,级联编码比单独RS编码或者卷积编码最大有4 dB编码增益;在中高信噪比时,级联编码性能趋近于卷积编码性能。RS and convolution codes cascaded by interleaver are used in OFDM system. Matlab simulation shows that cascaded code can improve the performance of OFDM system dramatically. At the range of low to medium SNR, the cascaded code can get 4 dB code gain at most as compared with RS or convolution code. At the range of medium to high SNR, the cascaded code has almost the same performance as convolution code.

关 键 词：RS编码 卷积码 级联编码 OFDM分析 

分 类 号：TN929.5[电子电信—通信与信息系统]