Improvement of High-performance Quasi-cyclic LDPC Code Construction Method
Xing Chen · Jisuanji gongcheng · 2010
Aiming at the problem quasi-cyclic Low-Density Parity-Check(LDPC) code has an efficient encoding algorithm,the degree distribution of the code usually can not satisfy the optimal degree distribution.This paper disposes the distribution of unit cyclic shift matrix in check matrix,improves the method for constructing check matrix.Simulation results show that improved construction method has efficient encoding algorithm,makes the code with approximate optimal degree distribution,and the code has better performance under the condition of the same code length.