一种实现信源信道联合编译码的新方法  

A Novel Joint Source Channel Coding

作　　者：周辉[1] 崔文惠[2] 邵菲[1] 

机构地区：[1]装备指挥技术学院信息装备系,北京101416 [2]西安卫星测控中心,西安710043

出　　处：《科技导报》2007年第10期34-38,共5页Science & Technology Review

摘　　要：应用自适应的思想,由一个自定义的代价函数构造出一种适合于实现联合编译码的变长码——代价测评对称可逆变长码。论述了代价测评对称可逆变长码的构造原理与性能分析,并在两种常用的通信信道(BSC及AWGN信道)中进行了仿真试验。结果表明,这种新型编码方式的性能优于一般的分离编译码方案,具有一定的使用价值。In this paper, based on the concept of adaption, the Cost-Evaluating Symmetrical Reversible Variable Length Codes （C-E SRVLCs）, which can be used for Joint Source Channel Coding （JSCC）, are constructed through a user-defined cost function. The principle of C-E SRVLCs is explained and analyzed, and simulations are carried out for two common channels （BSC and AWGN）. The results show that the codes are superior to the traditional separate codes, and may found applications in some areas.

关 键 词：对称可逆变长码 信源信道联合编译码 最大似然译码 

分 类 号：TN911.2[电子电信—通信与信息系统]