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基于多径信道能量随机动态打散的隐蔽无线通信方案

林钰达 金梁 黄开枝 楼洋明 孙小丽

林钰达, 金梁, 黄开枝, 楼洋明, 孙小丽. 基于多径信道能量随机动态打散的隐蔽无线通信方案[J]. 电子与信息学报, 2023, 45(2): 505-515. doi: 10.11999/JEIT211396
引用本文: 林钰达, 金梁, 黄开枝, 楼洋明, 孙小丽. 基于多径信道能量随机动态打散的隐蔽无线通信方案[J]. 电子与信息学报, 2023, 45(2): 505-515. doi: 10.11999/JEIT211396
LIN Yuda, JIN Liang, HUANG Kaizhi, LOU Yangming, SUN Xiaoli. Covert Wireless Communication Scheme Based on Random Dynamic Diffusion of Energy over Multipath Channel[J]. Journal of Electronics & Information Technology, 2023, 45(2): 505-515. doi: 10.11999/JEIT211396
Citation: LIN Yuda, JIN Liang, HUANG Kaizhi, LOU Yangming, SUN Xiaoli. Covert Wireless Communication Scheme Based on Random Dynamic Diffusion of Energy over Multipath Channel[J]. Journal of Electronics & Information Technology, 2023, 45(2): 505-515. doi: 10.11999/JEIT211396

基于多径信道能量随机动态打散的隐蔽无线通信方案

doi: 10.11999/JEIT211396
基金项目: 国家自然科学基金(61871404),重点院校和重点学科专业建设项目
详细信息
    作者简介:

    林钰达:男,博士生,主要研究方向为隐蔽无线通信及信息安全

    金梁:男,教授、博士生导师,主要研究方向为移动通信技术、阵列信号处理、无线内生安全

    黄开枝:女,教授、博士生导师,主要研究方向为移动通信网络及信息安全

    楼洋明:男,助理研究员,主要研究方向为移动通信网络及信息安全

    孙小丽:女,助理研究员,主要研究方向为移动通信网络及信息安全

    通讯作者:

    林钰达 linyuda.edu@foxmail.com

  • 中图分类号: TN918.81

Covert Wireless Communication Scheme Based on Random Dynamic Diffusion of Energy over Multipath Channel

Funds: The National Natural Science Foundation of China (61871404), The Key Universities and Academic Disciplines Construction Project
  • 摘要: 为应对无线通信中的未知非法检测威胁,该文提出一种随机跳径隐蔽通信方案,实现了信号能量在多径上随机动态打散。首先,基于我方多径信道信息设计了隐蔽传输策略,并构建了敌方检测模型。接着,通过引入相关性纠偏因子,分别推导了所提方案、选最强径方案和经典最大比发送方案的敌方平均接收信噪比(SNR)闭式表达式,并基于曲线拟合的方法计算了我方最小平均隐蔽概率,完成了隐蔽性能定性和定量评估。然后,推导了我方平均接收信噪比闭式解,分析了系统速率性能。仿真实验表明,所提方案不仅在未知敌方任何信息的一般情形下具有隐蔽性能优势,而且在敌方抵近我方的极端情形下可以最大程度地解决隐蔽通信失效问题。
  • 图  1  基于随机跳径方案的隐蔽通信系统

    图  2  阵面孔径对Willie平均信噪比的影响

    图  3  Willie信噪比的PDF

    图  4  Willie信噪比与信噪比墙差值的蒙特卡罗模拟

    图  5  阵面孔径对Bob平均接收信噪比的影响

    图  6  Bob基础接收信噪比对连接中断概率的影响

    图  7  检测距离对最小平均隐蔽概率的影响

    图  8  随机跳数对概率$ {\bar \xi ^{\angle * }} $$ p_{{\text{out}}}^\angle $的影响

    图  9  极端情形下3种方案的发射幅度方向图

    表  1  默认仿真参数

    参数数值参数数值
    信道模型${L_b} = {L_w} = 8$,$\Delta \varphi = \Delta \theta = {\pi }/2$,${\sigma _{\rm{b}}} = {\sigma _{\rm{w}}} = 0.1$基础噪声水平$\sigma _{{\text{bo}}}^2 = \sigma _{{\text{wo}}}^2 = - 60{\text{ dBm}}$
    发射天线$M \times K = 4 \times 4$,$\Delta d/\lambda = 0.5$,$a = 5$不确定性程度$\rho = 1.05$
    发射功率$P = 1{\text{ W}}$Willie信噪比墙${\gamma _{{\text{wall}}}} = - 10{\text{ dB}}$
    随机跳数$N = 8$Bob信噪比要求${\gamma _{{\text{req}}}} = 0{\text{ dB}}$
    节点间距离${d_{{\rm{ab}}} } = 100{\text{ m} }$,${d_{{\rm{aw}}} } = 300{\text{ m} }$隐蔽性要求$\varepsilon = 0.05$
    路径损耗指数$\alpha = 4$可靠性要求$\delta = 0.10$
    下载: 导出CSV

    表  2  极端情形的两组多径参数

    $L_{\rm b}^{\left( 1 \right)}$$L_{\rm b}^{\left( 2 \right)}$$L_{\rm b}^{\left( 3 \right)}$$L_{\rm b}^{\left( 4 \right)}$$L_{\rm w}^{\left( 1 \right)}$$L_{\rm w}^{\left( 2 \right)}$$L_{\rm w}^{\left( 3 \right)}$$L_{\rm w}^{\left( 4 \right)}$
    水平角$\varphi $$ {36^ \circ } $${26^ \circ }$$ - {60^ \circ }$$ - {80^ \circ }$${30^ \circ }$${77^ \circ }$$ - {18^ \circ }$$ - {16^ \circ }$
    仰角$\theta $${30^ \circ }$$ - {60^ \circ }$${45^ \circ }$$ - {20^ \circ }$${35^ \circ }$$ - {50^ \circ }$${75^ \circ }$$ - {82^ \circ }$
    幅度$\beta $$0.14$$0.08$$0.07$$0.10$$0.12$$0.08$$0.10$$0.11$
    相位$\tau $$\pi /2$$ - \pi /5$$\pi /3$$ - \pi /4$$\pi /4$$ - \pi /3$$\pi /5$$ - \pi /3$
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-01
  • 修回日期:  2022-03-16
  • 录用日期:  2022-03-25
  • 网络出版日期:  2022-03-30
  • 刊出日期:  2023-02-07

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