水声数据通信系统研究

STUDY ON UNDERWATER ACOUSTIC DATA COMMUNICATION SYSTEM

提出一种基于并行传输体制的水声数据通信系统设计方案,发射端采用纠错能力很强的级联码和MFSK调制,分集技术采用抑制载波的双边带调制方式,接收端对接收信号利用快速频谱分析进行解调,并进行硬判决Viterbi译码和BM迭代译码。实验表明,该水声数据通信系统的传输波特率为200bits/s,误码率达到10～（-5）～10～（-6）以下。

A design method of underwater acoustic data communication system based on parallel transmission system is proposed in this paper. The transmitter implements concatenation code, MFSK modulation, and double-sideband modulation to provide frequency diversity. The receiver implements EFT to demodulate the received signal, and adopts hard - decision Viterbi and BM iteration decoding to reduce the BER. The experiment proves that the underwater acoustic data communication system can provide data rates about 200 bits/s and the BER is under 10 ~5 - 10~6.