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面向无人机的通信感知一体化系统自干扰消除技术

叶启彬 肖泓宇 田晨 刘名 付沄琳 胡苏

叶启彬, 肖泓宇, 田晨, 刘名, 付沄琳, 胡苏. 面向无人机的通信感知一体化系统自干扰消除技术[J]. 西南交通大学学报, 2024, 59(4): 925-932. doi: 10.3969/j.issn.0258-2724.20230599
引用本文: 叶启彬, 肖泓宇, 田晨, 刘名, 付沄琳, 胡苏. 面向无人机的通信感知一体化系统自干扰消除技术[J]. 西南交通大学学报, 2024, 59(4): 925-932. doi: 10.3969/j.issn.0258-2724.20230599
YE Qibin, XIAO Hongyu, TIAN Chen, LIU Ming, FU Yunlin, HU Su. Self-Interference Cancellation Technology of Integrated Sensing and Communications System for Unmanned Aerial Vehicles[J]. Journal of Southwest Jiaotong University, 2024, 59(4): 925-932. doi: 10.3969/j.issn.0258-2724.20230599
Citation: YE Qibin, XIAO Hongyu, TIAN Chen, LIU Ming, FU Yunlin, HU Su. Self-Interference Cancellation Technology of Integrated Sensing and Communications System for Unmanned Aerial Vehicles[J]. Journal of Southwest Jiaotong University, 2024, 59(4): 925-932. doi: 10.3969/j.issn.0258-2724.20230599

面向无人机的通信感知一体化系统自干扰消除技术

doi: 10.3969/j.issn.0258-2724.20230599
基金项目: 国家自然科学基金(61971092,62301113);中国博士后科学基金(2023M730508);中央高校基本科研业务费专项资金(ZYGX2020ZB045,ZYGX2019J123,ZYGX2022J033,2242022k60006)
详细信息
    作者简介:

    叶启彬(1996—),男,博士研究生,研究方向为通信感知一体化,E-mail:202111220623@std.uestc.edu.cn

    通讯作者:

    胡苏(1983—),男,教授,博士,研究方向为5G/6G移动通信技术与系统,E-mail:husu@uestc.edu.cn

  • 中图分类号: TN975;V279

Self-Interference Cancellation Technology of Integrated Sensing and Communications System for Unmanned Aerial Vehicles

  • 摘要:

    在无人机通信场景中,机载通信感知一体化系统受到本地信号发射带来的强烈自干扰影响,导致系统对目标的感知性能降低. 针对这一挑战,提出基于正交频分复用(OFDM)的通信感知一体化自干扰消除方法. 首先,建立基于OFDM的通信感知一体化系统回波模型,并引入自干扰信号;然后,利用最小二乘算法估计自干扰信号的信道增益,并利用该增益对自干扰信号进行重建和抑制;最后,通过无人机通信场景下的仿真实验验证所提方法的有效性. 结果表明,该方法能够将自干扰信号抑制到噪声功率水平,将目标回波信号的信干噪比提升近10.00 dB,从而有效提高系统的感知性能.

     

  • 图 1  OFDM-based ISAC系统架构

    Figure 1.  OFDM-based ISAC system architecture

    图 2  RT = 13.38 m,SIC处理前、后的雷达图像

    Figure 2.  Radar images before and after SIC processing when RT = 13.38 m

    图 3  RT = 3.72 m,SIC处理前、后的雷达图像

    Figure 3.  Radar images before and after SIC processing when RT = 3.72 m

    图 4  RT = 1.63 m,SIC处理前、后的雷达图像

    Figure 4.  Radar images before and after SIC processing when RT = 1.63 m

    表  1  OFDM-based ISAC系统参数

    Table  1.   Parameters of OFDM-based ISAC system

    变量 数值
    ${f_{\text{c}}}$/GHz 24
    M/个 256
    N/个 1024
    $\Delta f$/kHz 90.909
    $T$/μs $11$
    ${T_{{\text{CP}}}}$/μs $1.375$
    $T_{\mathrm{O} }$/μs $12.375$
    $B$/MHz 93.1
    ${R_{\max }}$/m 206
    $\Delta R$/m 1.61
    ${v_{\max }}$/(m·s−1 ±252.3
    $\Delta v$/(m·s−1 1.97
    下载: 导出CSV

    表  2  SIC处理前后SINR

    Table  2.   SINRs before and after SIC processing dB

    RT/m 目标 1 目标 2
    SIC 前 SIC 后 SIC 前 SIC 后
    13.38 −32.93 −23.73 −32.93 −23.73
    3.72 −7.03 2.18 −7.03 2.18
    1.63 2.51 6.84 2.51 6.84
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-11-10
  • 修回日期:  2024-01-11
  • 网络出版日期:  2024-05-23
  • 刊出日期:  2024-01-18

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