摘要
为了设计出较高圈长(girth)以及灵活码率的LDPC码,研究了TS-LDPC(Turbo-structured LDPC)码的误码性能。基于SPA算法的良好性能,针对两个校验矩阵中不同列重信息比特的特点,提出了一种新颖的TS-LDPC译码算法,最后利用C语言仿真了同一码长不同译码算法的性能。仿真结果表明这种新的译码算法误码性能比一般的和积算法(SPA算法)和TLDA算法要好,而且收敛的速度要快,为TS-LDPC的应用提供了一种可行的译码算法。
The performance of TS - LDPC （Turbo - structured LDPC ） has been studied for designing a larger girth and flexible code rate. Based on the good performance of SPA decoding algorithm, and the characteristic of different column weights in check matrix, this paper will present a new decoding algorithm for TS - LDPC. And the performance of this decoding algorithm is investigated using C. The simulation results show that the BER performance and convergent speed of this decoding algorithm are better than that of traditional SPA decoding algorithm and TLDA algorithm, and it is very applicable to TS - LDPC code.
出处
《计算机仿真》
CSCD
2008年第4期133-137,共5页
Computer Simulation
基金
安徽省自然科学基金(070412044)资助项目
名称为LDPC码的新型构造方法
关键词
低密度校验码
迭代译码
比特误码率
Low density check code
Iterative decode
Bit error rate
