基于MSS-PDS和单阵元PTRM信道均衡的深海远程水声通信方案  

A long range deep-water acoustic communication scheme based on MSS-PDS and channel equalization by single sensor PTRM

作　　者：殷敬伟[1] 惠俊英[1] 

机构地区：[1]哈尔滨工程大学水声工程学院,哈尔滨150001

出　　处：《高技术通讯》2008年第4期382-386,共5页Chinese High Technology Letters

基　　金：863计划(2006AA09Z105);哈尔滨工程大学基础研究基金(HEUFT07073)资助项目

摘　　要：为了提高水声通信的性能,提出了一种联合运用 M 元扩频(MSS)通信和 Pattern时延差编码(PDS)水声通信体制,并采用单阵元被动式时间反转镜(PTRM)来实现声信道均衡的深海远程水声通信方案。该方案的 M 元扩频-Pattern 时延差编码通信技术既能胜任远程水声通信,又能提高通信速率;单阵元被动式时间反转镜信道均衡技术既可抑制多途扩展产生的码间干扰,又能提高信噪比。根据深海声道特性分析,该方案将通信固定节点置于声道轴以获取会聚增益,提高通信距离。计算机仿真结果证明,所提出的深海远程水声通信方案具有很好的鲁棒性和可行性。To improve the performance of underwater acoustic communication, the paper presents a long range deep-water acoustic communication scheme which combines the M-ary spread spectrum （MSS） communication with the pattern time delay shift coding （PDS） communication, and uses the single sensor passive time reversal mirror （PTRM） for the channel equalization. The scheme＇s MSS-PDS technology can be equal to long range under water acoustic communication and can improve the data transfer rate, and the technique of the channel equalization with single sensor PTRM canm itigate the inter-symbol interference （ISI） caused by the multipath channel expansion and can increase the signal-to-noise ratio. According to the analysis of the characters of the deep-water channel, the scheme makes use of convergence zone to improve the communication range. The results of the computer simulation show that the scheme for long range deep-water acoustic communication is robust and feasible.

关 键 词：水声通信 M元扩频(MSS) Pattern时延差编码(PDS) 被动式时间反转镜(PTRM) 码间干扰 深海声道 

分 类 号：TN929.3[电子电信—通信与信息系统] U284.8[电子电信—信息与通信工程]