基于时间调制阵列的共孔径干扰辅助短包隐蔽通信

马越; 马瑞谦; 杨炜伟; 林志; 缪晨; 吴文

doi:10.11999/JEIT231115

基于时间调制阵列的共孔径干扰辅助短包隐蔽通信

doi: 10.11999/JEIT231115

马越¹,
马瑞谦^2, ,,
杨炜伟³,
林志²,
缪晨¹,
吴文¹

1.
南京理工大学近程射频感知芯片与微系统教育部重点实验室南京 210014
2.
国防科技大学电子对抗学院合肥 230037
3.
陆军工程大学通信工程学院南京 210007

基金项目: 江苏省自然科学基金(BK20230916)，国家自然科学基金(62301254, 62171464)，中国博士后科学基金(2023M731700)，国防科技大学自主科研创新基金(22-ZZCX-07)，合肥综合性国家科学中心资助(本基金无项目编号)

详细信息

作者简介:
马越：男，助理研究员、博士后，研究方向为隐蔽通信、阵列信号处理

马瑞谦：男，讲师，研究方向为协同通信、短包通信、隐蔽通信

杨炜伟：男，教授，研究方向为协同通信、无线物理层安全、隐蔽通信

林志：男，副教授，研究方向为天地一体化信息网络、物理层安全、智能反射面

缪晨：男，副研究员，研究方向为近程探测、信号处理

吴文：男，研究员，研究方向为通感一体化、近程探测

通讯作者:
马瑞谦　mrq@nudt.edu.cn

中图分类号: TN918
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出版历程
- 收稿日期: 2023-10-17
- 修回日期: 2024-01-26
- 网络出版日期: 2024-01-31
- 刊出日期: 2024-05-30

Shared-aperture Jammer Assisted Covert Communication Using Time Modulated Array

MA Yue¹,
MA Ruiqian^{2
, ,},
YANG Weiwei³,
LIN Zhi²,
MIAO Chen¹,
WU Wen¹

1.
Key Laboratory of Near-Range RF Sensing ICs & Microsystems, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
2.
College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
3.
College of Communications Engineering, Army Engineering University of PLA, Nanjing 210007, China

Funds: The Natural Science Foundation of Jiangsu Province (BK20230916), The National Natural Science Foundation of China (62301254, 62171464), China Postdoctoral Science Foundation (2023M731700), The Research and Innovation Fund of National University of Defense Technology (22-ZZCX-07), The Comprehensive National Science Center of Hefei

摘要

摘要: 该文首次研究了基于时间调制阵列(TMA)的共孔径干扰辅助短包隐蔽通信。首先提出并设计了共口径干扰的TMA架构，提出一种优化方法，能够在最大化目标方向信号增益的同时对非目标方向形成干扰。基于上述模型，推导出隐蔽性约束和隐蔽吞吐量的闭合表达式。在此基础上，该文进一步对发送功率和数据包长进行联合优化，以最大化隐蔽吞吐量。仿真结果表明，存在一个使隐蔽吞吐量最大化的最优包长，所提方案相比基准方案实现了更好的隐蔽通信性能。
- 隐蔽通信 /
- 时间调制阵列 /
- 共口径干扰 /
- 人工噪声
Abstract: The short packet covert communication using a shared-aperture jammer assisted Time-Modulated Array (TMA) is investigated for the first time in this paper. Firstly, a TMA architecture for shared-aperture jammer is proposed and an optimization method is introduced that maximizes the gain of the target direction while forming interference in non-target directions. Based on this model, closed-form expressions for the covertness constraint and covert throughput are derived. Furthermore, the transmission power and blocklength are optimized to maximize the covert throughput. Simulation results show that there exists an optimum blocklength that maximizes the covert throughput, and the proposed scheme outperforms the benchmark scheme in terms of covert communication performance.
- Covert communication /
- Time Modulated Array(TMA) /
- Shared-aperture jammer /
- Artificial noise

HTML全文

图 1 基于TMA的隐蔽通信系统架构

下载: 全尺寸图片幻灯片

图 2 开关时间优化结果与TMA方向图

下载: 全尺寸图片幻灯片

图 3 不同参数对最大隐蔽吞吐量的影响

下载: 全尺寸图片幻灯片

1 基于CS算法的TMA方向图优化程序

初始化：使用随机实数来生成s个巢穴的初始种群$ {x_i} $(i = 1, 2, ···, 　S)，其中$ {x_i} $表示切换序列。
适应度计算：将每个宿主巢穴代入适合度函数$ {f_i} $，计算适合度值。
当t<K时：通过Lévy飞行随机选择一个巢穴，并评估其适应度值；
随机选择一个巢；
如果$ {f_i} > {f_o} $，则用新解代替o；
一部分($ P \in \left[ {0,1} \right] $)较差的巢被放弃，并建立新的巢；
保留最佳解决方案；
对解决方案进行排序，找出当前最佳解决方案；
得到最优的开关序列。
结束

下载: 导出CSV

表 1 仿真参数设置

天线数	迭代次数	谐波级数	巢数	信号旁瓣	干扰旁瓣	Bob方向	Willie方向	信道编码速率
M=12	K=1 000	h=1	S=25	–40 dB	–25 dB	–20°	–5°	R=0.1 BPCU

d_ab	d_aw	d_bw	总发射功率	噪声功率	路径衰减	最大包长	最小包长
40 m	10 m	10 m	P=–20 dBm	σ²=–80 dBm	α=3	N_max=800	N_min=100

下载: 导出CSV

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