LDPC带选主元三角分解编码性能  

Research on Encoding Performance of LDPC LU Factorization with Pivoting

作　　者：高化猛 徐晓晗[2] 

机构地区：[1]装备学院,北京102206 [2]海军军训器材研究所,北京102308

出　　处：《火力与指挥控制》2012年第11期17-19,共3页Fire Control & Command Control

基　　金：国家高技术发展计划基金资助项目(2006AA705102)

摘　　要：分析LDPC码的特点和优势。阐述LDPC码的编码原理和基于生成矩阵、基于三角分解两种主要编码方法。指出三角分解编码方法受到矩阵分解限制:矩阵要求满秩,矩阵所有的顺序主子式非零。分析带选主元三角分解法的编码方法。使用C语言编译环境和X86计算机,对LDPC基于生成矩阵的编码系统和带选主元三角分解法的编码系统进行计算,得到P4(R)3.2 GHz、内存512 M硬件环境下的编码效率。The features and advantages of LDPC codes are analyzed. The encoding theory and the two main encoding ways of LDPC, the way through generation matrix and the way based LU factorization are described. The matrix factorization constraint such as full rank and non-zero order principal minor in LU factorization is pointed. The encode algorithm based on the LU factorization with pivoting is analyzed. Using the C language compiler environment and X86 computer, the LDPC coding system based on the generator matrix and the LU factorization with pivoting are simulated and calculated. And the coding efficiency for P4 （R）3.2GHz, 512M memory hardware environment is obtained.

关 键 词：低密度奇偶校验码 编码 三角分解 带选主元 

分 类 号：E917[军事] TN911.22[电子电信—通信与信息系统]