准循环LDPC码在水声语音通信系统应用的性能分析

Performance Analysis of Quasi-cyclic LDPC Code in Underwater Acoustic Communication System

该文研究了准循环LDPC码作为信道编码在水声语音通信系统中的传输性能,首先搭建了数字语音通信系统的框图,然后构建了准循环LDPC码,然后通过MATLAB软件对准循环LDPC码的传输性能进行了仿真,结论为:信噪比为4d B左右时,语音传输误码率小于10-3。

This paper studies the transmission performance of the quasi-cyclic LDPCcode as the channel coding in the underwater acoustic communication system. First, itsets up a frame of digital voice communication system and then the quasi-cyclic LDPCcode. It stimulates the transmission performance of this LDPC code by using MATLAB.The results show that when SNR is around 4dB, the error rate of speech transmission islower than 10^-3.