纠错码在PDS系统中的应用研究

Research on Error Correcting Codes in PDS System

本文模拟水声信道环境,尝试将RS码、卷积码分别与Pattern时延差编码(PDS)通信体制相结合,构造出不同的编码Pattern时延差(CPDS)系统。通过仿真,从码率、码长、约束长度的变换中给出对比结果,并分析了性能差异的原因,从而得知构建高性能CPDS系统时纠错码参数选择的原则。最后,仿真实验得出了应用RS码的CPDS通信体制更适用于水声通信。

This paper simulates the environment of underwater acoustic channel,tries to combine RS code and convolution code with PDS communication system,constructs every kind of Pattern Time Delay Shift Coding （CPDS） System.It gets the result of comparison from different bit rate,code length and constraint length by simulating,and analyzes the reason of variance in performance,thus find out the principle of error correction codes parameter selection when building the highperformance CPDS system.The CPDS system with RS code is more suitable for underwater acoustic communication.