LDPC码的研究进展和应用展望  

Progress and Application Prospect of Generalized LDPC Codes

作　　者：易旭[1] 杜昊阳 

机构地区：[1]解放军理工大学通信工程学院,江苏南京410007

出　　处：《通信技术》2016年第1期1-6,共6页Communications Technology

摘　　要：简要介绍了LDPC码的基本概念和用Tanner图表示LDPC码的校验矩阵,分别阐述了LDPC码在码字构造、有效编码、译码以及性能分析方面的具体发展进程。详细分析了LDPC的快速编码方法原理,并给出快速编码方法的具体步骤。展望了LDPC码在未来通信中的应用前景,并探究了LDPC码目前存在的问题和未来的研究方向。重点介绍了多进制LDPC码在卫星导航中的应用前景,比较了多进制LDPC相比现已应用在导航系统中的二进制LDPC码的优势。The basic concept of LDPC and the expression of parity check with the graph of Tanner is briefly described, and the specific development of LDPC in structure, effective code and decoding, including per- formance analysis also expounded. Meanwhile, the theory and implementation procedure of fast LDPC cod- ing are discussed, and the applications prospects of LDPC in the future also given. In addition, the exist- ing problems and the directions for future research of LDPC are explored. The applications prospects of LDPC codes over GF （q） in Navigation system is principally emphasized. Finally, the comparison of LDPC codes over GF（q） with ordinary LDPC for their superiorities is done.

关 键 词：LDPC码 快速编码方法 多进制LDPC码 卫星导航 

分 类 号：TN911[电子电信—通信与信息系统]