一种提高高速水下通信性能的基带波形结构设计  

A waveform design method for improving high speed underwater communication performance

作　　者：刘云涛[1] 杨莘元[1] 蔡惠智[2] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]中国科学院声学研究所,北京100080

出　　处：《声学学报》2005年第5期435-441,共7页Acta Acustica

基　　金：国家"863"计划基金(863-818-09-09)"十五"国防预研基金(10106050302)资助项目

摘　　要：提出了一种能够抑制多径干扰的基带波形设计方法,该方法是通过保持传输信息速率不变,在成形滤波器第二个零点叠加信号来实现的。以多进制相位调制方式采用这种波形结构进行了仿真实验和湖水试验,都获得了比传统的波形结构更低的误码率。试验结果表明该波形设计方法能够提高水下通信系统的性能,能够有效抑制水下信道的多径干扰,能够提高水下通信的作用距离和可靠性。A waveform design method that can restrain the multipath effect was proposed. It was achieved by placing signal on the second zero point of waveform filter and keeping the information rate. Emulate experiments and lake experiment obtained lower error code rate than traditional waveform design method using this waveform structure with multiple phase shift key modulation. The results of experiment shows that the waveform design method can improve underwater communication system performance, can restrain multipath effect of underwater channel, and can increase transmit distance and reliability of underwater communication system.

关 键 词：波形结构 水下通信 通信性能 结构设计 基带 高速 设计方法 多径干扰 成形滤波器 

分 类 号：TN929.3[电子电信—通信与信息系统] TQ171.12[电子电信—信息与通信工程]