Construction of Structure LDPC Codes with Full Rank Based on Multi-Permutation Matrix
Jinsha Yuan · Dianzi xuebao · 2012
Based on multi-permutation matrix,a constructing method for structure LDPC codes suitable for cooperative relaying joint with network coding is proposed.Multi-permutation is defined firstly,and then some important characteristic is summarized and proved.Detail process to construct full rank LDPC codes with column-weight-3 and girth-6 is given.It is analyzed that the generation matrix of proposed LDPC codes with structure and spare feature is suitable for joint encoding and iterative decoding in cooperative relaying with network coding.Compared to array LDPC codes,LDPC codes with dual diagonal and triple diagonal structure,which are the same 2/3 code rate,code length and quasi-cyclic matrix Y structure,simulation results show favorable decoding performance of LDPC codes proposed in the paper.