大自由距离网格编码的最佳译码和DAPSK的迭代译码(英文)  

Optimum Decoding of Trellis-coding Scheme with Large Free Distances and Iterative Decoding of DAPSK

作　　者：赛和德[1] 吴乐南[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《应用科学学报》2002年第3期239-245,共7页Journal of Applied Sciences

基　　金：Project Supported by the National Natural Science Foundation of China (60 0 72 0 13 )

摘　　要：提出一种新的接收机结构 ,用于卷积编码和差分幅度相移键控调制的迭代译码 ,其性能接近于加性高斯白噪声信道上的相干检测 .此外 ,还提出了对于 Lin等人的网格编码结构的最佳译码 ,性能优于其准最佳译码 ,但译码延时要比传统网格编码调制或卷积码的译码延时长 .A new receiver for convolutionally coded and differential amplitude phase shift keying modulation using iterative decoding is proposed. Performance close to that of coherent detection over an additive white Gaussian noise channel is demonstrated. Also, an optimum decoding of the trellis code encoded by the schemes proposed by Lin, et al outperforms their suboptimum decoding, even though the decoding delay of each of their schemes and this decoder are longer than that of a conventional trellis coded modulation or convolutional codes.

关 键 词：自由距离 最佳译码 DAPSK 卷积码 网格编码调制 差分幅度相移健控调制 迭代译码 非相关检测 

分 类 号：TN911.22[电子电信—通信与信息系统]