南京大学学报（自然科学版）Issue(z1)：92-95,4.DOI:10.13232/j.cnki.jnju.2015.07.018
水声信道中 LDPC 码和 Turbo 码性能比较研究
Performance comparison of LDPC code with Turbo code over underwater acoustic channels
摘要
Abstract
Channel error-correct coding is very important for underwater acoustic communication systems to improve their bit error rate performance.Combining channel decoder with adaptive decision feedback equalizer,this paper compares performance of an irregular LDPC code,(3,6 )-irregular LDPC code and a Turbo code over multipath shallow water acoustic channel.Computer simulations show that the three channel codes have almost the same per-formances at the short code length.However,the irregular LDPC code obtains much more performance improvement than the Turbo code and the regular LDPC code with the increase of code length.Performance of the irregular LDPC code is 0.23 and 0.33 dB better than that of the Turbo code and the regular code at the code length of 4000 and the bit error rate of 10 -4 .关键词
水声信道/LDPC 码/Turbo 码Key words
underwater acoustic channel/LDPC code/Turbo code分类
信息技术与安全科学引用本文复制引用
刘胜兴,付强..水声信道中 LDPC 码和 Turbo 码性能比较研究[J].南京大学学报（自然科学版）,2015,(z1):92-95,4.基金项目
国家自然科学基金(41276038) （41276038）
