一类改进的Gallager方法构造的低密度校验码A Class of Improved Low-Density Parity-Check Codes Constructed Based on Gallager′s Form
吴广恩,李德龙,李俊文
摘要(Abstract)：
针对短环对有限长LDPC迭代译码性能的劣化,提出了一类基于Gallager方法构造的低密度校验码。该方法在保留Gallager构造基本形式的基础上,采用了类似准循环的构造形式,使生成的码字不受短环的干扰并具有好的距离特性。仿真结果表明,改进的编码在分组长度较短时甚至优于Gallager码的性能。
关键词(KeyWords)： 子矩阵;LDPC;循环移位;Gallager码
基金项目(Foundation):
作者(Author): 吴广恩,李德龙,李俊文
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