LDPC码在OFDM通信系统中的应用与仿真  

The Application and Simulation of LDPC Code in the OFDM System

作　　者：张凯[1] 马奔[1] 梁钊[1] 

机构地区：[1]五邑大学信息学院,广东江门529020

出　　处：《五邑大学学报（自然科学版）》2007年第3期23-27,44,共6页Journal of Wuyi University(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(04011761);江门市科技计划项目(0501)

摘　　要：介绍了正交频分复用(OFDM)基带传输系统及其模型,概述了LDPC的编译码方法,研究了其在OFDM系统中的性能,并与卷积码进行了比较.仿真表明,LDPC码在OFDM基带传输系统中具有更好的纠错能力.In this paper an OFDM based transmission system and its model are introduced;the encoding/decoding methods of LDPC code are described.The performance of the OFDM system based on LDPC code is further studied and compared with that of another OFDM system using the convolutional code.Simulation results show that the former has much stronger error correcting capability than the latter.

关 键 词：正交频分复用 循环前缀 低密度奇偶校验码 二部图 和-积算法 

分 类 号：TN91[电子电信—通信与信息系统]