协作通信系统中的LDPC码性能分析研究  

Performance analysis of LDPC codes in cooperative communication system

作　　者：徐华[1] 

机构地区：[1]盐城师范学院物理科学与电子技术学院,江苏盐城224002

出　　处：《计算机工程与应用》2011年第8期56-58,134,共4页Computer Engineering and Applications

基　　金：江苏省自然科学基金(No.BK2008199);盐城师范学院教授;博士基金(No.10YSYJB0201)

摘　　要：协作通信方式是解决通信系统容量不断增加的重要方法,协作通信系统中采用LDPC码,可以有效改善中继节点处的差错传播带来的系统性能下降。给出了LDPC码的基本编解码原理,阐述了基于LDPC码的协作通信系统的分析模型,给出相应的数值仿真结果和分析。仿真结果表明,采用了(3,6)正则LDPC码的协作通信系统的性能远优于直接通信链路的性能。Cooperative communication is an important scheme to meet the increasing requirement of capacity of communication system.Performance degradation due to the error propagation on the relay node can be improved effectively by using LDPC codes in the cooperative communication system.The fundamental theory of encoding and decoding of LDPC codes are given firstly.Then the analysis model of cooperative communication system based on LDPC codes is described.The simulation results and analysis are presented.Simulation results show that the performance of cooperative communication system based on（3,6） regular LDPC codes is much better than that of single link transmission.

关 键 词：低密度奇偶校验(LDPC)码 协作通信 译码重传(DF)协议 

分 类 号：TN911.73[电子电信—通信与信息系统]