并行组合扩频技术在水声通信中的应用  

The application of parallel combinatory spread spectrum in underwater acoustic communication

作　　者：殷敬伟 王蕾 张晓 

机构地区：[1]哈尔滨工程大学水声技术实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2010年第7期958-962,共5页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(60802060);教育部高等学校博士点基金资助项目(200802171061);中央高校基本科研业务费专项资金资助项目(HEUCF100505)

摘　　要：并行组合扩频技术是最近几年发展起来的具有较高的传输效率和频带利用率的一种软扩频通信方式,适合于在军事保密通信、猝发通信以及频带受限的环境中使用.重点研究了并行组合扩频技术的原理,并首次提出将其应用到水声通信领域中,在仿真环境下构建了并行组合扩频水声通信系统,不但大幅度改善了以往水声扩频通信系统传输效率不高的问题,并且通过与映射序列扩频方式的结合,还可使发射信号恒包络,从而明显改善其峰值平均功率比.最后,通过仿真实验结果,验证了该通信系统在中远程浅海水声信道中的稳定性和可靠性.Parallel combinatory spread spectrum（PCSS） communication is a recent invention.Its features include a higher transmission rate and ratio of bandwidth utilization.PCSS is suitable for secure military communications,burst communications,and situations where there is limited bandwidth.This paper has focused on the fundamentals of PCSS and its data mapping algorithm.The authors proposed the application of PCSS to underwater acoustic（UWA） communication.A PCSS-UWA communication system was tested in a simulated maritime environment.The novel system not only significantly improved the information transmission rate in traditional UWA-SS communications,but also made the transmitted signal constantly enveloped.Peak average power ratio（PAPR） was further improved by combining it with mapping sequence spread spectrum（MSSS）.Simulation results validated the system＇s reliability and stability.

关 键 词：水声通信 并行组合扩频 传输效率 

分 类 号：TN911.5[电子电信—通信与信息系统] TB567[电子电信—信息与通信工程]