Self-adjusting decision feedback equalizer for variational underwater acoustic channel environments  

作　　者：Yasong Luo Zhong Liu Shengliang Hu Jingbo He 

机构地区：[1]College of Electronics Engineering,Naval University of Engineering

出　　处：《Journal of Systems Engineering and Electronics》2014年第1期26-33,共8页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61101205);the Natural Science Foundation of Hubei Province of China(2009CDB337);the Natural Science Foundation of Naval University of Engineering(HGDQNJJ13019)

摘　　要：Aimed at the abominable influences to blind equaliza-tion algorithms caused by complex time-space variability existing in underwater acoustic channels, a new self-adjusting decision feedback equalization （DFE） algorithm adapting to different under-water acoustic channel environments is proposed by changing its central tap position. Besides, this new algorithm behaves faster convergence speed based on the analysis of equalizers’ working rules, which is more suitable to implement communications in dif-ferent unknown channels. Corresponding results and conclusions are validated by simulations and spot experiments.Aimed at the abominable influences to blind equaliza-tion algorithms caused by complex time-space variability existing in underwater acoustic channels, a new self-adjusting decision feedback equalization （DFE） algorithm adapting to different under-water acoustic channel environments is proposed by changing its central tap position. Besides, this new algorithm behaves faster convergence speed based on the analysis of equalizers’ working rules, which is more suitable to implement communications in dif-ferent unknown channels. Corresponding results and conclusions are validated by simulations and spot experiments.

关 键 词：underwater acoustic communication equalization algorithm variable underwater acoustic channel self-adjusting. 

分 类 号：TN715[电子电信—电路与系统] TN929.3