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首页> 外文会议>10th Western Pacific Acoustics Conference. >A Low Complexity Layered Space-Time Coding Scheme for Underwater Acoustic Communication Systems
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A Low Complexity Layered Space-Time Coding Scheme for Underwater Acoustic Communication Systems

机译：水下声通信系统的低复杂度分层时空编码方案

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摘要

Underwater acoustic communication systems continue to striving for ever higher data rates. This goal is particular challenging for systems that are power, bandwidth, and complexity limited. Recent information theoretic studies have shown that significant increase of channel capacity can be exploited by using multiple antenna arrays at both transmitter and receiver. This paper proposes a low complexity spatial parallel transmitting scheme based on layered space-time coding and spectrum spreading, named LST-SS scheme to increase spectrum efficiency of underwater acoustic communication systems. In this scheme, layered signals are spread by the same spreading code. Detection of signals from different transmit transducers are implemented based the propagation delays in the channels and Rake receiver with only one receiving hydrophone. Simulation with underwater acoustic channels models showed that the LST-SS scheme has better error performance compared with single transmitting transducer scheme when the systems have the same information rate. The spatial diversity obtained by the scheme can be translated into the increase of data.
机译：水下声通信系统继续努力追求更高的数据速率。对于功率，带宽和复杂性受限制的系统，此目标尤其具有挑战性。最近的信息理论研究表明，通过在发射器和接收器处使用多个天线阵列，可以充分利用信道容量。本文提出了一种基于分层时空编码和频谱扩展的低复杂度空间并行传输方案，称为LST-SS方案，以提高水下声通信系统的频谱效率。在该方案中，分层信号被相同的扩展码扩展。基于仅一个接收水听器的信道和Rake接收器中的传播延迟来实现对来自不同发射换能器的信号的检测。水下声通道模型的仿真表明，当系统具有相同的信息速率时，与单发射换能器方案相比，LST-SS方案具有更好的误码性能。通过该方案获得的空间分集可以转化为数据的增加。

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  • 来源
  • 会议地点 Beijing(CN);Beijing(CN)
  • 作者

    Xin Zhang; Xiaoliang Sun; Xiaoji Zhang;

  • 作者单位

    College of Marine Engineering,Northwestern Polytechnical University,Xi’an 710072,P.R.China;

    College of Marine Engineering,Northwestern Polytechnical University,Xi’an 710072,P.R.China;

    College of Marine Engineering,Northwestern Polytechnical University,Xi’an 710072,P.R.China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 声学;声学;
  • 关键词

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