基于时间调制阵列的共孔径干扰辅助短包隐蔽通信  

Shared-aperture Jammer Assisted Covert Communication Using Time Modulated Array

作　　者：马越[1] 马瑞谦 杨炜伟 林志 缪晨[1] 吴文[1] MA Yue;MA Ruiqian;YANG Weiwei;LIN Zhi;MIAO Chen;WU Wen(Key Laboratory of Near-Range RF Sensing ICs&Microsystems,Ministry of Education,Nanjing University of Science and Technology,Nanjing 210094,China;College of Electronic Engineering,National University of Defense Technology,Hefei 230037,China;College of Communications Engineering,Army Engineering University of PLA,Nanjing 210007,China)

机构地区：[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

出　　处：《电子与信息学报》2024年第5期1977-1985,共9页Journal of Electronics & Information Technology

基　　金：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。

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。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.

关 键 词：隐蔽通信 时间调制阵列 共口径干扰 人工噪声 

分 类 号：TN918[电子电信—通信与信息系统]