摘要
RA(Repeat Accum ulate)码是一种简单但非常重要的 TL C(Turbo L ike Codes)码。本文首先介绍了 RA码的 Tanner图表示 ,然后重点分析研究并详细推导了 RA码在加性高斯白噪声 (A WGN)信道上的迭代译码算法。
RA codes is one of TLC, simple but very important. This paper introduces a Tanner graph representation of RA codes at first, and then mainly focuse on the theoretical analysis of the decoding algorithm of RA codes on the AWGN channel and derivates it in detail.
出处
《现代电子技术》
2004年第17期80-82,共3页
Modern Electronics Technique
关键词
RA码
TANNER图
似然比
迭代译码
RA codes
Tanner graph
log likelihood ratio
iterative decoding