基于LDPC码的快速译码改进算法  

Fast Decoding Improved Algorithm of LDPC Code

作　　者：孟祥彩 王中训[1] 刘宝军[1] MENG Xiang-cai;WANG Zhong-xun;LIU Bao-jun(School of Opto-Electronic Information, Yantai University, Yantai, 264005, Chin)

机构地区：[1]烟台大学光电信息科学技术学院,山东烟台264005

出　　处：《电声技术》2017年第11期106-109,共4页Audio Engineering

摘　　要：多元LDPC码译码简单,稳定性高,是信道纠错码的首选。在引见LDPC码译码算法的根本上,详细介绍了快速译码算法原理,并结合LDPC的编码构造,在编码的过程中添加判断元素而改进了快速译码算法,在实验中通过MATLAB的仿真,更表明新型的算法迭代次数下降了,译码信息准确了,优化了快速译码算法。Non-binary LDPC code is the first choice of channel error-correcting codes because of the simple decoding and higher stability. The paper introduced the basic theory of LDPC decoding algorithm,and then detailed introduced rapid decoding algorithm which is added judgment element in the encoded code,combined with LDPC coding structure. After MATLAB simulation,we can indicate that the new algorithm has less number of iterations,and exact decoding information,. It optimizes the rapid decoding algorithm.

关 键 词：LDPC FFT-BP 判决位 译码算法 

分 类 号：TN911[电子电信—通信与信息系统]