水声扩频通信中相关算法的研究  

The study of correlation algorithm in the underwater spread-spectrum communication

作　　者：李霞[1] 方世良[1] 陆佶人[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《电路与系统学报》2005年第6期76-79,共4页Journal of Circuits and Systems

摘　　要：水声信道中的衰变多途特性使得水声数字通信比较困难,为改善系统性能、减少误码率,在原有水声通信技术的基础上,近年来发展了水下扩谱通信技术,其中的各种快速算法也备受关注,但不同算法的效率存在很大的差异。由于传统相关算法的运算复杂度无法完成水下实时通信的目的,因此本文采用了沃尔什—哈达马算法,从而提高了算法的运算速度,改善了系统的通信性能。The speciality of fading and multi-path of the underwater channel make the acoustic communication difficult. Based on the acoustic communication technique the underwater spread spectrum technique has been developed in resent years to improve the communication system performance and to decrease the error probability. Some rapid algorithms are being studied. There are discrepancy among these algorithms. The traditional algorithms can＇t complete real-time underwater communication for the operation complexity. So the Walsh-Hadmard algorithm is adopted in this paper to improve the operation speed and communication performance of the whole system.

关 键 词：沃尔什-哈达马算法 扩谱通信 水声信道 

分 类 号：TN929.3[电子电信—通信与信息系统]