现代电子技术Issue(23)：75-79,5.
低复杂度高围长LDPC二维网格法码字构造
2D lattice codon structure with low complexity high girth LDPC
摘要
Abstract
A LDPC construction method based on 2D lattice method is proposed in this paper. With the method,a strict se⁃lection of slope sets is carried out to avoid the possibility of forming triangle and quadrangle in configuration. As a result,girth⁃ten LDPC was accomplished to improve performance significantly instead of girth⁃eight one known as before. Besides,the resul⁃ting parity⁃check matrix has the feature of quasi⁃cyclic permutation,so that encoding and decoding of these codes can be effi⁃ciently implemented by using simple shift⁃registers. The result of simulation with Matlab shows that the proposed code performs excellent in the waterfall region and has good error floor property.关键词
低密度奇偶校验码/二维网格法/码字校验矩阵/斜率集筛选Key words
LDPC/2D lattice/codon check matrix/slope set selection分类
信息技术与安全科学引用本文复制引用
章雪婷,陈少平,饶文贵..低复杂度高围长LDPC二维网格法码字构造[J].现代电子技术,2014,(23):75-79,5.基金项目
国家自然科学基金（61179007）；湖北省自然科学基金 （）
