An application of the differential spread-spectrum technique in mobile underwater acoustic communication  

作　　者：YIN JingWei ZHANG Xiao SUN LiQiang MEI JiDan 

机构地区：[1]Harbin Engineering University, Science and Technology on Underwater Acoustic Laboratory, Harbin 150001, China

出　　处：《Science China(Information Sciences)》2011年第10期2190-2198,共9页中国科学（信息科学）（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.60802060,51179034);the China Postdoctoral Science Foundation (Grant No.20090461313);the Research Fund for the Doctoral Program of Higher Education of China (Grant No.200802171061)

摘　　要：A direct sequence/binary differential phase-shift keying underwater acoustic communication technique based on differential coherent demodulation is proposed. Differential coherent demodulation is adopted at the receiving terminal to overcome the difficulty of estimating the carrier in underwater acoustic communication and overcoming the frequency and phase error resulting from carrier frequency drift. Anti-multipath, antiDoppler, low-error-rate, effective and robust features for a complex underwater acoustic channel were verified in a lake experiment.A direct sequence/binary differential phase-shift keying underwater acoustic communication technique based on differential coherent demodulation is proposed. Differential coherent demodulation is adopted at the receiving terminal to overcome the difficulty of estimating the carrier in underwater acoustic communication and overcoming the frequency and phase error resulting from carrier frequency drift. Anti-multipath, antiDoppler, low-error-rate, effective and robust features for a complex underwater acoustic channel were verified in a lake experiment.

关 键 词：DOPPLER differential coding spread spectrum communication underwater acoustic communication 

分 类 号：TN929.3[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]