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STBC-OFDM技术在水声通信中的试验研究
引用本文:周德富,刘云涛,蔡惠智. STBC-OFDM技术在水声通信中的试验研究[J]. 声学技术, 2012, 0(5): 466-470
作者姓名:周德富  刘云涛  蔡惠智
作者单位:[1]中国科学院声学研究所,北京100190 [2]中国科学院研究生院,北京100039 [3]北京中科海讯数字信号处理技术有限公司,北京100095
基金项目:“十一五”国防预研基金(1010704020501)
摘    要:空时分组编码(Space Time Block Coding,STBC)技术能够获得满发射分集增益并且译码简单,而正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术可对抗水声信道中的多径干扰和实现较高的频谱利用率。设计了将空时分组编码与正交频分复用相结合(STBC-OFDM)的高速水声通信系统方案,并进行了湖上试验研究。湖试中,在1200m距离下,带宽为4.32kHz时有效传输速率为3.328kbps,误比特率低于10-5。湖试结果表明,STBC-OFDM技术在高速水声通信中的应用潜力。

关 键 词:空时分组编码  正交频分复用  水声通信  多输入多输出
收稿时间:2011-09-04
修稿时间:2011-12-27

Experimental study of STBC-OFDM technique in underwater acoustic communication
ZHOU De-fu,LIU Yun-tao and CAI Hui-zhi. Experimental study of STBC-OFDM technique in underwater acoustic communication[J]. Technical Acoustics, 2012, 0(5): 466-470
Authors:ZHOU De-fu  LIU Yun-tao  CAI Hui-zhi
Affiliation:1.Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;2.Graduate University of the Chinese Academy of Sciences,Beijing 100039 China;3.Beijing Zhongke Haixun Digital Signal Processing Technology Co.,Ltd.,Beijing 100095,China)
Abstract:Space Time Block Coding(STBC) technique could achieve transmitting diversity gain and be decoded easily,and Orthogonal Frequency Division Multiplexing(OFDM) is robust to multi-path effect in the underwater acoustic(UWA) channel and could reach higher spectrum efficiency.A novel high speed UWA communication system based on STBC-OFDM technique is proposed.It was tested in a lake.A bit rate of 3.328kbps over a bandwidth of 4.32kHz was approached within 1200m with the bit error rate(BER) lower than 10-5 in the lake.These results suggest that STBC-OFDM technique is an appealing solution for high data rate underwater acoustic communications.
Keywords:Space Time Block Coding  Orthogonal Frequency Division Multiplexing  underwater acoustic communication  multiple input multiple output
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