QC-LDPC的构造及性能仿真  

The construction of Quasi-Cyclic LDPC codes and its simulation performance

作　　者：尹芳[1] 仇洪冰[1] 滕舟[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2010年第1期9-12,共4页Journal of Guilin University of Electronic Technology

基　　金：广西自然科学基金(0731025)

摘　　要：针对目前应用比较广泛的基于准循环矩阵构造的QC-LDPC(准循环LDPC)码的各种构造方法,分析比较了随机构造LDPC和各种准循环LDPC编码方法的优缺点,通过理论分析和MATLAB中的性能仿真,提出的相应的优化方案,使性能得到了很大的提高。同时,仿真结果表明准循环LDPC性能良好、编译码简单、构造灵活、易于硬件实现,因此具有广阔的应用前景,非常适合于在未来的移动通信系统中使用。According to the porpular application of the Quasi-Cyclic Low-Density Parity-Check codes made in quasicyclic matrix, the most kinds of construction methods is investigated. The improved methods is also mentioned and it＇s proved that it could get good performance. The conclusion is elicited by theory analysis and performance simulation in software of MATLAB. Since it＇s easy to encode/decode, and has good performance the quasi-cyclic low- density parity-check codes would have good application in the mobile communication system in the future.

关 键 词：QC—LDPC 校验矩阵 PEG DVB—S2 π旋转 光正交LDPC 

分 类 号：TN911.2[电子电信—通信与信息系统]