高阶调制与好码的结合问题  

On the combination of good codes and high order modulations

作　　者：郭文彬[1] 杨鸿文[1] 杨大成[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《通信学报》2002年第8期117-120,共4页Journal on Communications

基　　金：国家高技术研究发展计划(863计划)基金资助项目(2001AA123054)

摘　　要：本文从信道容量分析的角度,对多进制调制与信道编码好码结合问题进行研究,发现联合编码调制设计与编码调制分别独立设计之间容量没有显著区别。说明二进制好码同高阶调制直接级联,就能逼近信道容量,这也解释了目前文献结果和我们的仿真结果关于TTCM和PT-TCM结果基本一致的现象。This paper investigates the ability of Turbo code combined with multilevel modulations from the view of channel capacity. We find that TTCM and PT-TCM scheme have almost the same capacity under AWGN channel. What we can conclude is that, when considering the multilevel modulations and channel coding, the binary channel coding and non-binary coding has almost the same performance provided that the coding schemes are binary and good codes such as Turbo codes.

关 键 词：高阶调制 好码 信道容量 TURBO码 多进制调制 TTCM TP-TCM 信道编码 

分 类 号：TN911.22[电子电信—通信与信息系统]