格雷码在分布式信源编码中的应用与性能分析

Application and Performance Analysis of Gray Code in the Distributed Source Coding

提出一种基于格雷码的分布式信源编码框架,并讨论格雷码对分布式信源编码的性能影响。框架前端先采用格雷码编码,再进行Slepian-Wolf编码。以使用LDPC码的Wyner-Ziv编码为例,对框架进行仿真验证。仿真结果显示,基于格雷码的分布式信源编码在性能上有了较大的提升。

This paper proposes a DSC(distributed source coding) framework based on gray code,and gives an analysis of the performance.In this DSC structure,the gray coding is performed before the Slepian-Wolf coding.We take the Wyner-Ziv code using LDPC(Low-Density Parity-Check Codes) for example,to verify this code framework.Experiment results show that there is a considerable improvement of the performance by using this DSC framework based on gray code.