电讯技术2018，Vol.58Issue(6)：621-624,4.DOI:10.3969/j.issn.1001-893x.2018.06.001
一种新颖的低错误平层LDPC码构造方法
A Novel Construction Method of LDPC Codes with Low Error Floor
摘要
Abstract
Aiming at the disadvantage that Low Density Parity Check( LDPC) codes may exist the fault of the error floor in the high signal-to-noise ratio(SNR) region,a new method for constructing the LDPC codes with low error floor is proposed. The basic matrix of the method is composed of the Progressive Edge Growth(PEG) algorithm and the Approximate Cycle Extrinsic message degree(ACE) algorithm so as to improve the connectivity of the cycle in the basic matrix. The basic matrix is cyclically extended based on the PS's cyclic shift coefficient matrix,so the parity check matrix is constructed. The method can not only improve the error floor in the high SNR region,but also flexibly design the code length and code rate. The simulation results show that PAP-LDPC(3 600,2 700) codes have no error floor above the SNR of 4 dB.关键词
LDPC码/错误平层/PEG算法/ACE算法/分割移位Key words
LDPC code/error floor/PEG algorithm/ACE algorithm/partition and shift分类
信息技术与安全科学引用本文复制引用
袁建国,郑德猛,孙乐乐,曾晶..一种新颖的低错误平层LDPC码构造方法[J].电讯技术,2018,58(6):621-624,4.基金项目
国家自然科学基金资助项目(61472464,61671091,61471075) （61472464,61671091,61471075）
重庆市基础与前沿研究计划项目(cstc2015jcyjA0554) （cstc2015jcyjA0554）
重庆市研究生科研创新项目资助(CYS17241) （CYS17241）
