电信科学 ›› 2019, Vol. 35 ›› Issue (3): 76-83.doi: 10.11959/j.issn.1000-0801.2019010

• 研究与开发 • 上一篇    下一篇

水声通信中基于正则化阈值迭代的脉冲噪声抑制方法

李娜娜,李有明,余明宸,卢倩倩   

  1. 宁波大学信息科学与工程学院,浙江 宁波 315211
  • 修回日期:2018-12-30 出版日期:2019-03-01 发布日期:2019-03-23
  • 作者简介:李娜娜(1992- ),女,宁波大学信息科学与工程学院硕士生,主要研究方向为水声通信中的信号处理方法。|李有明(1963- ),男,宁波大学教授、博士生导师,主要研究方向为宽带通信、电力线通信、协作中继和认知无线电等。|余明宸(1991- ),男,宁波大学信息科学与工程学院硕士生,主要研究方向为电力线通信系统脉冲干扰。|卢倩倩(1991- ),女,宁波大学信息科学与工程学院硕士生,主要研究方向为无线传感器网络中的协作定位技术。
  • 基金资助:
    国家自然科学基金资助项目(61571250);浙江省自然科学基金资助项目(LY18F010010)

Regularized threshold iteration method for impulsive noise suppression in underwater acoustic communication

Nana LI,Youming LI,Mingchen YU,Qianqian LU   

  1. Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China
  • Revised:2018-12-30 Online:2019-03-01 Published:2019-03-23
  • Supported by:
    The National Natural Science Foundation of China(61571250);The Natural Science Foundation of Zhejiang Province of China(LY18F010010)

摘要:

脉冲噪声干扰会严重地影响水声通信系统的性能,提出了一种基于正则化阈值迭代的脉冲噪声抑制方法。首先利用空子载波矩阵,将脉冲噪声与高斯白噪声和有用信号分离,然后基于压缩感知理论,通过引入阈值迭代将脉冲噪声估计问题转化为正则化问题,并利用阈值函数对脉冲噪声进行估计,得到脉冲噪声的估计值,最后在接收信号中减去脉冲噪声的估计值,完成对脉冲噪声的抑制。仿真结果表明:与已有估计算法相比较,提出的方法有效降低了水声通信系统的误码率(BER)和均方误差(MSE),提高了信号传输的可靠性。

关键词: 水声通信, 脉冲噪声, 压缩感知, 阈值迭代

Abstract:

Impulsive noise interference can seriously affect the performance of underwater acoustic communication systems.An impulsive noise suppression method based on regularized threshold iteration was presented.Firstly,the null subcarrier matrix was used to separate impulsive noise from Gaussian white noise and useful signals.Then,based on the theory of compressed sensing,the impulsive noise estimation problem was transformed into a regularization problem by introducing a threshold iteration,and the impulsive noise was estimated by using a threshold function to obtain the estimated value of the impulsive noise.Finally,the estimated impulsive noise was subtracted from the received signal.The simulation results show that the proposed method can effectively reduce the bit error rate (BER) and mean square error (MSE),and improve the reliability of signal transmission in underwater acoustic communication environment.

Key words: underwater acoustic communication, impulsive noise, compressive sensing, threshold iteration

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