AWGN信道上比特交织、迭代译码的格码调制  

Trellis-Coded Modulation With Bit Interleaving and Iterative Decoding

作　　者：谭明新 徐根深 

机构地区：[1]哈尔滨工程大学电子工程系,黑龙江哈尔滨150001 [2]武汉七二二研究所,湖北武汉430074

出　　处：《系统工程与电子技术》2001年第12期21-24,共4页Systems Engineering and Electronics

摘　　要：论述了比特交织网格编码调制 (BICM)。为了获取较好的性能 ,给出了AWGN信道上一种硬判决反馈迭代译码 (ID)方法 ,从而证实了具有好的汉明距离特性的卷积码能为BICM -ID提供大的Euclidean距离。把收缩卷积码和多相位 /电平调制有效地结合起来 。This paper considers bit-leaved coded modulation (BICM) for bandwidth-efficient transmission over AWGN channels. A simple iterative decoding (ID) method with hard-decision feedback is suggested to achieve better performance. The paper shows that convolutional codes with good Hamming-distance property can provide large free Euclidean distance for BICM-ID. BICM-ID allows an efficient combination of punctured convolutional codes and multiphase/level modulation, and therefore provides a simple mechanism for variable-rate transmission.

关 键 词：信号处理 迭代译码 格码调制 信道编码 AWGN信道 

分 类 号：TN911.22[电子电信—通信与信息系统]