串行级联码在浅海水声通信中的性能研究  

Performance Study on Serial Concatenated Codes in Shallow Seawater Acoustic Communication

作　　者：丁姝[1] 黄华[1] 崔炳胜 赵晓群[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]天津通信段,天津300140

出　　处：《大连民族学院学报》2009年第5期417-421,共5页Journal of Dalian Nationalities University

摘　　要：基于π/4?QPSK调制解调方式讨论串行级联码在浅海水声信道中的实现方案,建立了浅海水声信道模型,并在此基础上针对多径干扰和多普勒频移进行了仿真。仿真表明,串行级联码能有效地减小密集突发错误,保证通信的可靠性。串行级联码的性能明显大于单独的RS码或卷积码,在不考虑译码复杂度的情况下,误码率低于Turbo码和LDPC码。Based on π/4-QPSK modulation and demodulation,this paper demonstrates an implementation of serial concatenated codes in acoustic channels in shallow seawater and builds an acoustic channel model for shallow seawater.Multipath interference and doppler shift are emulated on that basis.The emulation shows that serial concatenated codes reduce dense burst errors effectively and enable reliable communication.Serial concatenated codes apparently outperform Reed Solomon（RS） codes or convolutional codes. They feature a bit -error rate （BER） lower than those of Turbo codes and LDPC codes without regard to decoding complexity.

关 键 词：浅海水声信道 Π/4-QPSK 串行级联码 RS码 卷积码 TURBO码 LDPC码 

分 类 号：TN919[电子电信—通信与信息系统]