舰船电子工程2019，Vol.39Issue(7)：205-211,7.DOI:10.3969/j.issn.1672-9730.2019.07.048
大girth多进制阵列准循环LDPC码
Nonbinary Array Quasi-Cyclic LDPC Codes of Large Girth
刘冰 1任席闯 1崔洁1
作者信息
- 1. 中国人民解放军91469部队 北京 100841
- 折叠
摘要
Abstract
The error performance of codewords are affected by the size and distribution of the girth in the Tanner graph,and the performance of nonbinary quasi-cyclic(QC)low-density parity-check(LDPC)can be improved by increasing girth properly. The exponential matrices with large girth are constructed by the explicit approach,which is determined by the cycle-governing lin?ear equations. A generalized two-dimensional matrix dispersion based on two various Galois fields is proposed. The nonbinary array LDPC codes are designed by combining with the array codes of large girth and the matrix dispersion. The simulation results show that the codes considered can lead to significant gains by increasing the girth in a certain range over an additive white Gaussian noise channel. It benefits fast encoding and efficient decoding,and the error correction can ensure reliable transmission and meet high bandwidth efficiency.关键词
多进制低密度奇偶校验码/准循环/大girth/阵列码Key words
nonbinary low-density parity-check(LDPC)codes/quasi-cyclic/large girth/array codes分类
信息技术与安全科学引用本文复制引用
刘冰,任席闯,崔洁..大girth多进制阵列准循环LDPC码[J].舰船电子工程,2019,39(7):205-211,7.
