基于Q矩阵的LDPC码编码设计方法  

Design of LDPC Code Based on Q-Matrix

作　　者：王哲[1] 栾英姿[1] 

机构地区：[1]西安电子科技大学,陕西西安710071

出　　处：《计算机技术与发展》2010年第6期201-204,共4页Computer Technology and Development

摘　　要：给出了Q矩阵的定义,在此基础上提出了一种基于Q矩阵的LDPC码编码器设计方法。此设计方案将奇偶校验矩阵H分解成两个子矩阵Hp和Hd,通过对这两个子矩阵分别设计,构造出H矩阵。其中Hp是上三角双对角矩阵,Hd矩阵由Q矩阵按照一定的行重列重,根据某种排列规则构造而成。着重研究了Q排列规则,并找到了一种较好方法,使得这种编码方案得到了很好的性能。采用的这种编码方案的编码器算法具有较低的实现复杂度,为LDPC码编码器设计提供了很好的选择方案。In this paper,the definition of Q matrix is introduced first,and the designation of LDPC codes based on Q matrix is proposed,which is based on QMatrix.In this method,the parity check matrix H is constructed by two matrixes：Hp and Hd,Hp is an upper triangular dual diagonal matrix,Hd is formed by Q matrix based on a certain principle which is the focus of this paper,a good construction principle of Hd is proposed,which improves the performances of LDPC codes.The encoder algorithm is easier to implement and it provides a good suggestion for the encoder of LDPC codes.

关 键 词：LDPC码 奇偶校验矩阵 Q矩阵 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]