分割转移构造下QC-LDPC码设计与实现  

Design and implementation of QC-LDPC code under Partitionand-Shift construction

作　　者：宫芳[1] 杜亚涛[1] 孔挺[2] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]海军飞行学院教研部,辽宁葫芦岛125001

出　　处：《信息技术》2012年第7期161-164,共4页Information Technology

摘　　要：为了降低码长较长的LDPC码在随机构造下编译码的复杂度与难度,利用PS(分割转移法)构造一类不存在四环的(6075,5402)QC-LDPC码,并对其性能进行了仿真,仿真结果表明该准循环码可以达到与同等长度下随机码相同的性能。针对此结构,利用VHDL编程实现了编译码过程,并验证了其正确性,与随机LDPC码相比实现复杂度与难度大大降低。In order to reduce the complexity and the difficulty of the long LDPC code with random construction, the paper constructs a kind of （6075, 5402 ） LDPC code without cycle four using PS （Partition-and-Shift） method, and the simulation result shows that the decoding performance of the QC- LDPC code achieves with the random LDPC code with the same code length. For the structure, it implements encoding and decoding process using VHDL program language, and verifies its correctness. Compared with the random LDPC code the complexity and difficulty is reduced greatly.

关 键 词：QC-LDPC码 PS构造 编译码 VHDL 

分 类 号：TN911.2[电子电信—通信与信息系统]