摘要
An algebraic construction methodology is proposed to design binary time-invariant convolutional low-density parity-check(LDPC)codes.Assisted by a proposed partial search algorithm,the polynomialform parity-check matrix of the time-invariant convolutional LDPC code is derived by combining some special codewords of an(n,2,n−1)code.The achieved convolutional LDPC codes possess the characteristics of comparatively large girth and given syndrome former memory.The objective of our design is to enable the time-invariant convolutional LDPC codes the advantages of excellent error performance and fast encoding.In particular,the error performance of the proposed convolutional LDPC code with small constraint length is superior to most existing convolutional LDPC codes.
基金
the National Natural Science Foundation of China(No.61401164)。
作者简介
Liwei Mu,received her M.S.degree in communication and information system from Harbin Institute of Technology,Harbin,Heilongjiang,China in 2006 and the Ph.D.degree in communication and information system from Sun Yat-sen University,Guangzhou,Guangdong,China in 2009,respectively.She is currently the associate professor in the Laboratory of Quantum Engineering and Quantum Materials,School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou,Guangdong,China.Her research interests include channel coding,molecular communication and wireless communications.email:liweimu@m.scnu.edu.cn。
