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基于Pattern时延差编码体制的4信道水声通信
引用本文:殷敬伟,惠俊英,韦志恒,姚直象,杨娟.基于Pattern时延差编码体制的4信道水声通信[J].声学技术,2006,25(1):10-15.
作者姓名:殷敬伟  惠俊英  韦志恒  姚直象  杨娟
作者单位:1. 哈尔滨工程大学水声工程学院,哈尔滨,150001
2. 哈尔滨工程大学水声工程学院,哈尔滨,150001;海军工程大学信息与电气工程学院,武汉,430033
摘    要:采用Pattern时延差编码(PDS)通信体制,研究了4通信信道水声通信技术。通信系统利用信息码元的时延差值进行时延编码,采用码元的多种不同波形(Pattern)来进行码元分割,另外还采用频率分割来划分通信信道。其优点是可有效对抗水声多途干扰并实现高速通信,通信速率达到1200bit/s。提出依据最小均方误差准则,利用波形相似性来联合估计两个信道的时延差值。通过大量海洋信道仿真实验,验证了PDS体制具有高通信速率和高可靠性。

关 键 词:水声通信  PDS通信体制  时延估计
文章编号:1000-3630(2006)-01-0010-06
收稿时间:2004-11-11
修稿时间:2004-11-112005-02-16

Four channel underwater acoustic communication based on PDS system
YIN Jing-wei,HUI Jun-ying,WEI Zhi-heng,YAO Zhi-xiang and YANG Juan.Four channel underwater acoustic communication based on PDS system[J].Technical Acoustics,2006,25(1):10-15.
Authors:YIN Jing-wei  HUI Jun-ying  WEI Zhi-heng  YAO Zhi-xiang and YANG Juan
Affiliation:College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001;College of Information & Electrical Engineering, Navy Engineering University, Wuhan 430043, China;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001
Abstract:A 4-channel underwater acoustic communication system is studied based on pattern time delay shift(PDS) coding.By using different patterns for code division and different frequency for channel division,the system is highly robust against multi-path interference.The transmission rate is 1200bit/s.Combined estimation of time-delay between two channels is obtained with a minimum mean square error criterion by using similarity of the signals.Simulation results show that the PDS system can achieve high data rate and good reliability.
Keywords:underwater acoustic communication  PDS system  time-delay estimation
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