一种CMMB系统中LDPC编码改进方法  

An improved method of LDPC encoding in CMMB system

作　　者：王莉 周长征 任丙印 

机构地区：[1]中国洛阳电子装备试验中心,河南洛阳471003

出　　处：《现代电子技术》2016年第1期72-75,共4页Modern Electronics Technique

摘　　要：针对CMMB系统中LDPC码长较长,传统LDPC编码方法复杂度较高的问题,研究了两种常用的基于LU分解的LDPC编码算法,并在此基础上对LU分解算法进行改进。仿真结果表明,改进算法能更有效地降低编码复杂度,节省存储空间,提高编码速率,更适合硬件实现。For LDPC code in CMMB system is long,and complexity of the traditional LDPC encoding method is high,two commonly-used LDPC encoding algorithms based on LU decomposition were studied,and on this basis,the LU decomposition algorithm was improved. The simulation results show that the improved algorithm can reduce the encoding complexity effectively,save the storage space and improve the encoding rate. The algorithm is suitable for hardware implementation.

关 键 词：移动多媒体广播 LDPC码 LU分解 编码 

分 类 号：TN911.22[电子电信—通信与信息系统]