南京大学学报（自然科学版）Issue(z1)：55-59,5.DOI:10.13232/j.cnki.jnju.2015.07.011
基于信道估计的判决反馈均衡器在时变水声信道中的应用研究
Implementation of channel-estimation-based adaptive decision feedback equalization in time-varying underwater acoustic channels
摘要
Abstract
To solve poor-performance problems of recursive least squares decision feedback equalizer(RLS-DFE)in time-varying underwater environment,channel-estimation based decision feedback equalization,termed as CE-DFE equalizer is introduced for coherent underwater acoustic communication in this paper.The performance of CE-DFE equalizer is simulated and compared with that of RLS-DFE equalizer over two different shallow water acoustic channel:time-invariant and time-varying channels.Computer simulations show that both the CE-DFE and RLS-DFE equalizers have good performance over time-invariant shallow water acoustic channel.RLS-DFE equalizer has poor performance over the time-varying shallow acoustic channel.However,CE-DFE equalizer holds good performance due to its ability to track the variation of the channels.关键词
水声通信/CE-DFE/时变水声信道/自适应均衡Key words
underwater acoustic communication/CE-DFE/time-varying underwater acoustic channel/adaptive equalizer分类
信息技术与安全科学引用本文复制引用
付强,肖沈阳,郑思远,刘胜兴..基于信道估计的判决反馈均衡器在时变水声信道中的应用研究[J].南京大学学报（自然科学版）,2015,(z1):55-59,5.基金项目
国家自然科学基金(41276038) （41276038）
