LDPC编译码算法的仿真分析  被引量:7

Simulation Analysis on Coding-decoding Algorithms of LDPC Codes

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作  者:詹平红 李红星[2] 尹爱兵 ZHAN Pinghong;LI Hongxing;YIN Aibing(Army Academy of Artillery and Air Defense,Hefei 230000;Anhui Xinhua University,Hefei 230000)

机构地区:[1]陆军炮兵防空兵学院,合肥230000 [2]安徽新华学院,合肥230000

出  处:《计算机与数字工程》2019年第5期1082-1085,1109,共5页Computer & Digital Engineering

摘  要:信道编码是数字通信系统中非常重要的组成部分,LDPC编码技术因其优越的性能成为近年来编码界研究的热点。校验矩阵的构造是LDPC码编码的前提,它直接影响着编译码的复杂度,对于算法的实现起着关键的作用。论文采用了代数构造法构造校验矩阵,对构建的LDPC码进行BP译码算法。在编译码算法的基础上,利用Matlab开发平台对LDPC码的误码率进行仿真,仿真结果表明构建的LDPC码的具有可靠的译码性能。Channel coding is a very important part of digital communication system. In recent years,LDPC encoding technolo. gy had already become a hot issues of research in coding fields because of its superior characters. The generation of check matrix is the premise for LDPC code,which directly affects the complexity of the encoding and decoding,and which plays a key role for the realization of the algorithm. The paper utilizes algebra constructing methods to construct the check matrix,which is applied to BP de. coding algorithms for LDPC codes constructed. Matlab is adopted to implement the BER simulation of LDPC codes based on the cod. ing-decoding algorithms. Simulation results show that the LDPC codes constructed have a reliable decoding performance.

关 键 词:LDPC码 信道编码 信道译码 仿真 

分 类 号:TN911.22[电子电信—通信与信息系统]

 

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