一种分级的非正则LDPC码构造方法  

A Grading Construction Method of Irregular LDPC Codes

作　　者：姚森杰[1] 朱爱民[1] 

机构地区：[1]中国人民解放军镇江船艇学院船艇指挥系,江苏镇江212003

出　　处：《淮阴工学院学报》2009年第3期48-51,共4页Journal of Huaiyin Institute of Technology

摘　　要：LDPC码由于其卓越的纠错性能引起了学术界的广泛重视,当前LDPC所面临的一个主要问题是其编码复杂性的问题。给出了一种分级的非正则LDPC码构造方法,由该方法所构造的校验矩阵具有近似下三角特性,从而可以大大降低LDPC的编译码复杂度,同时具有与完全随机LDPC码相匹配的性能。Low - Density Parity - Check codes have attracted great attention from academic world because of its excellent error - correcting performance. The main problem of its usage is the complexity of encoding. This pa- per proposes a method of construction of irregular Low - Density Parity - Check codes, which we call method of grading. Parity - Check matrix of the code constructed by this method not only has the characteristic of low - triangle which can lower the complexity of encoding but also has excellent performance that can match the constructed LDPC.

关 键 词：低密度码 积-和算法 非正则LDPC码 度分布 

分 类 号：TN919.3[电子电信—通信与信息系统]