系统工程与电子技术 ›› 2025, Vol. 47 ›› Issue (3): 1010-1018.doi: 10.12305/j.issn.1001-506X.2025.03.33

• 通信与网络 • 上一篇    

基于M元循环移位的MIMO扩频深海水声通信方法

程琳1,2,3, 葛威1,2,3,4,*, 门伟5   

  1. 1. 哈尔滨工程大学水声技术全国重点实验室, 黑龙江 哈尔滨 150001
    2. 极地海洋声学与技术应用教育部重点实验室, 黑龙江 哈尔滨 150001
    3. 哈尔滨工程大学水声工程学院, 黑龙江 哈尔滨 150001
    4. 中国科学院声学研究所声场声信息国家重点实验室, 北京 100190
    5. 清华大学电子工程系, 北京 100084
  • 收稿日期:2023-12-12 出版日期:2025-03-28 发布日期:2025-04-18
  • 通讯作者: 葛威
  • 作者简介:程琳 (2001—), 女, 硕士研究生, 主要研究方向为扩频水声通信
    葛威 (1994—), 男, 讲师, 博士, 主要研究方向为水声通信、声呐信号处理、嵌入式系统开发
    门伟 (1995—), 男, 博士后, 主要研究方向为水声通信和探测
  • 基金资助:
    国家自然科学基金(62371154);国家自然科学基金(62301181)

MIMO spread spectrum deep-sea underwater acoustic communication method based on M-ary cyclic shift keying

Lin CHENG1,2,3, Wei GE1,2,3,4,*, Wei MEN5   

  1. 1. National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
    2. Key Laboratory for Polar Acoustics and Application of Ministry of Education, Harbin 150001, China
    3. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
    4. State Key Laboratory of Acoustics Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
    5. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • Received:2023-12-12 Online:2025-03-28 Published:2025-04-18
  • Contact: Wei GE

摘要:

针对传统扩频通信系统速率低, 难以广泛应用于水下通信组网的问题, 提出一种将M元循环移位键控(M-ary cyclic shift keying, MCSK)扩频与多输入多输出(multiple input multiple output, MIMO)通信系统相结合的高效水声通信方法, 一方面利用MIMO系统的空分复用增益及MCSK编码增加信息调制维度, 进而实现通信速率的显著提升; 另一方面, 接收端相应提出一种频域相位共轭能量检测算法抑制码间干扰和同信道干扰并进行低复杂度译码, 并通过仿真验证其优越性。2发8收MIMO深海试验中, 成功实现了通信距离为10 km和20 km处通信速率为257.8 bps的低误码水声通信, 验证了所提方法的有效性和稳健性。

关键词: 扩频水声通信, M元循环移位, 多输入多输出, 被动相位共轭, 频域能量检测

Abstract:

To address the problem of low data rate and limited applicability of traditional spread spectrum communication systems in underwater networking, an efficient underwater acoustic communication method called multiple input multiple output M-ary cyclic shift keying (MIMO-MCSK) is proposed, which combines MCSK spread spectrum with MIMO communication systems. On the one hand, the MIMO-MCSK exploits the spatial multiplexing gain of MIMO systems and the information modulation dimension increased by MCSK encoding to significantly enhance the communication data rate. On the other hand, a frequency-domain phase conjugate energy detection algorithm is proposed at the receiver end to suppress inter-symbol interference and co-channel interference, and perform low complexity decode, verifying its superiority through simulation. In a deep water MIMO trial with two transmitters and eight receivers, low bit-error-rate underwater acoustic communication is achieved at communication distance of 10 km and 20 km with a data rate of 257.8 bps, validating the effectiveness and robustness of the proposed method.

Key words: spread spectrum underwater acoustic communication, M-ary cyclic shift keying, multiple input multiple output (MIMO), passive phase conjugation, frequency-domain energy detection

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