文章摘要
姜煜,白兴宇.基于VBLAST的水声MIMO高速通信技术研究[J].声学技术,2011,(4):345~349
基于VBLAST的水声MIMO高速通信技术研究
Research on VBLAST based underwater MIMO high speed communication technique
投稿时间:2010-04-07  修订日期:2010-07-26
DOI:
中文关键词: 高速水下通信  垂直分层空时编码  多输入多输出  自适应空时判决反馈均衡
英文关键词: high speed underwater communication  VBLAST  MIMO  adaptive space-time decision feedback equaliza-tion
基金项目:
作者单位E-mail
姜煜 杭州应用声学研究所声纳技术国家级重点实验室, 杭州 310012 jiangyubxy@yahoo.com.cn 
白兴宇 杭州应用声学研究所声纳技术国家级重点实验室, 杭州 310012  
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中文摘要:
      为实现高速水下通信,提出了一种基于VBLAST(贝尔实验室垂直分层空时)编码的水声MIMO(多输入多输出)通信技术。该技术通过在发射端和接收端同时采用多个阵元进行多发多收,借助空间复用,可有效解决水下通信系统带宽资源缺乏的难题,使系统在不增加带宽的条件下成倍提高数据传输速率。在水声MIMO通信系统的接收端,提出采用带有二阶数字锁相环、基于自适应空时判决反馈均衡的相干解调技术。该技术可有效克服水声MIMO信道中的多径干扰及同频干扰,且能自适应跟踪信道变化。仿真及湖试结果证明了所提水声MIMO高速通信技术的良好性能。
英文摘要:
      The underwater acoustic MIMO communication technique based on VBLAST code is proposed to obtain high data rate.The technique can realize spatial multiplexing with multiple transmitters and receivers simultaneously to greatly increase data rate without increasing the system bandwidth.Robust coherent demodulation technique based on space-time adaptive decision-feedback equalization is proposed.The technique can efficiently suppress multi-path in-terference,co-channel interference and rapid phase fluctuation of MIMO channel.In addition,it can track the variable channel adaptively.Good performance is demonstrated by both simulation and lake trial results.
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