J4 ›› 2013, Vol. 40 ›› Issue (1): 53-57+86.doi: 10.3969/j.issn.1001-2400.2013.01.010

• 研究论文 • 上一篇    下一篇

用于水声通信系统的迭代接收算法

赵亮;葛建华   

  1. (西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071)
  • 收稿日期:2011-10-29 出版日期:2013-02-20 发布日期:2013-03-28
  • 通讯作者: 赵亮
  • 作者简介:赵亮(1976-),男,博士,E-mail: zhl@xidian.edu.cn.
  • 基金资助:

    国家111资助项目(B08038);综合业务网理论与关键技术国家重点实验室资助项目(ISNBSH201001)

Iterative receiver algorithm for underwater acoustic communications

ZHAO Liang;GE Jianhua   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2011-10-29 Online:2013-02-20 Published:2013-03-28
  • Contact: ZHAO Liang

摘要:

提出一种基于频域最小均方误差(MMSE)均衡器、信道估计器和卷积码译码器,运用Turbo迭代原理构建用于单载波水声点对点通信的迭代接收算法.该迭代接收算法,引入频域均衡处理来降低多通道均衡处理复杂性,利用译码器提供的软信息来改善均衡器和信道估计器自身的性能,从而使用较少的接收阵元实现高速、可靠的数据传输.基于实测的声速抛面曲线(SSP)和有限元声线跟踪(Bellhop)方法模拟的水声信道脉冲响应用于算法性能的验证.仿真结果表明,使用上述体制的水声通信系统,利用译码器提供的增益来提高系统性能的同时,接收阵元的数量进一步减少,满足构建水下通信网节点的要求.

关键词: 水声通信网, 单载波, 频域均衡, 迭代接收, 卷积码

Abstract:

Based on the MMSE frequency domain equalizer, channel estimator, and convolutional decoding, an iterative receiver in the time-frequency domain(TFD) for SC underwater acoustic point to point communications is developed. This iterative procedure can reduce the calculation complexity of equalization using frequency domain processing and obtain better performance using less receiving elements. Finally, we use the sound speed profile(SSP) measured in the lake and finite-element ray tracing(Bellhop) to simulate the underwater channel to verify the performance of the proposed receive algorithms.

Key words: underwater acoustic communication networks, single carrier(SC), frequency domain equalization(FDE), iterative receiver, convolutional codes

中图分类号: 

  • TN929.3