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低复杂度水声多输入多输出正交时频空调制通信方法研究

王彪 方梓德 朱雨男 郭晓鹏 朱柏宇

王彪, 方梓德, 朱雨男, 郭晓鹏, 朱柏宇. 低复杂度水声多输入多输出正交时频空调制通信方法研究[J]. 电子与信息学报, 2024, 46(1): 83-91. doi: 10.11999/JEIT230183
引用本文: 王彪, 方梓德, 朱雨男, 郭晓鹏, 朱柏宇. 低复杂度水声多输入多输出正交时频空调制通信方法研究[J]. 电子与信息学报, 2024, 46(1): 83-91. doi: 10.11999/JEIT230183
WANG Biao, FANG Zide, ZHU Yunan, GUO Xiaopeng, ZHU Boyu. Research on Low Complexity Underwater Acoustic Multiple Input Multiple Output Orthogonal Time Frequency Space Modulation Communication Method[J]. Journal of Electronics & Information Technology, 2024, 46(1): 83-91. doi: 10.11999/JEIT230183
Citation: WANG Biao, FANG Zide, ZHU Yunan, GUO Xiaopeng, ZHU Boyu. Research on Low Complexity Underwater Acoustic Multiple Input Multiple Output Orthogonal Time Frequency Space Modulation Communication Method[J]. Journal of Electronics & Information Technology, 2024, 46(1): 83-91. doi: 10.11999/JEIT230183

低复杂度水声多输入多输出正交时频空调制通信方法研究

doi: 10.11999/JEIT230183
基金项目: 国家自然科学基金(52071164),江苏省研究生科研与实践创新计划(KYCX23_3908)
详细信息
    作者简介:

    王彪:男,教授,研究方向为水下阵列信号处理、水声通信与水下传感器网络

    方梓德:男,硕士生,研究方向为水声信号处理

    朱雨男:男,博士生,研究方向为水声信号处理

    郭晓鹏:男,硕士生,研究方向为水声信号处理

    朱柏宇:男,硕士生,研究方向为水声信号处理

    通讯作者:

    方梓德 211110304102@stu.just.edu.cn

  • 中图分类号: TN929.3

Research on Low Complexity Underwater Acoustic Multiple Input Multiple Output Orthogonal Time Frequency Space Modulation Communication Method

Funds: The National Natural Science Foundation of China (52071164), The Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX23_3908)
  • 摘要: 在多输入多输出正交时频空调制(MIMO-OTFS)水声通信系统中,基于消息传递(MP)算法的MIMO-OTFS通信的计算复杂度较高,在实际应用中会增加设备成本。针对上述问题,该文提出一种基于2维虚拟时间反转镜(VTRM)的MIMO-OTFS均衡算法,该算法利用VTRM的时频空聚焦特性,有效提高了均衡性能,并通过改进的2维比例归一化最小均方(IPNLMS)算法进行信道估计,该算法利用时延-多普勒域信道的稀疏特性以较低的复杂度提高了收敛速度,最后通过2维自适应判决反馈均衡算法消除残余的码间串扰,进一步提高系统性能。仿真结果表明,所提均衡算法具有可行性,且在保证相同性能时,复杂度低于MP算法。
  • 图  1  SISO-OTFS系统模型框图

    图  2  MIMO-OTFS系统模型框图

    图  3  2D-DFE流程框图

    图  4  导频符号结构

    图  5  仿真时变水声信道

    图  6  收敛速度

    图  7  收敛性能随信噪比的变化

    图  8  2D-VTRM处理后的等效信道

    图  9  误码率性能随信噪比的变化

    表  1  仿真参数

    仿真参数符号
    发射阵元数$ {N_{\text{t}}} $2
    接收阵元数$ {N_{\text{r}}} $6
    子载波数M512
    符号数N128
    最低子载波频率$ {f_0} $12 kHz
    信号带宽B4 kHz
    子载波间隔$ \Delta f $7.81 Hz
    OTFS符号周期$ {T_{\text{s}}} $0.25 ms
    循环前缀时长${T_{ \rm{CP} } }$32 ms
    OTFS帧时长${T_{ \rm{OTFS} } }$20.48 s
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-03-21
  • 修回日期:  2023-09-05
  • 网络出版日期:  2023-09-11
  • 刊出日期:  2024-01-17

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