一种智能超表面辅助的非视距安全通信方法

doi:10.19665/j.issn1001-2400.2023.02.007

摘要/Abstract

摘要：

针对发射机与期望用户之间存在阻挡时的非视距物理层安全传输问题,提出了智能超表面辅助的阵列天线物理层安全通信方法。首先,建立智能超表面阵列天线系统模型,通过阵列天线直传链路和智能超表面反射链路完成无线系统的安全通信。随后,针对窃听者被动接收信号,无法确定窃听者具体位置的情况,提出了在确保期望用户可靠接收信号的同时以最大化人工噪声干扰功率为目标联合优化发射波束成形矢量和智能超表面反射系数矩阵的优化方法。最后,分析优化问题,并利用辅助变量和半定松弛等方法得到最优解,达到抑制窃听者接收信号的同时,确保期望用户可靠和安全通信的目的。仿真实验证实,智能超表面辅助的物理层安全通信方法提高了非视距场景下信息传输的可靠性与安全性。

关键词: 物理层安全, 智能超表面, 非视距安全传输

Abstract:

Aiming at the problem of physical layer security transmission when there is no direct transmission link between transmitter and desired user,a physical layer transmission scheme based on the reconfigurable intelligent surface (RIS) is proposed.This dissertation first establishes an RIS array antenna system model.The secure communication of the wireless system is completed through the array antenna direct transmission link and the RIS reflection link.Furthermore,in view of the situation that eavesdropers passively receive information and cannot determine the specific location of eavesdropers,the dissertation optimizes the transmitting beamforming vector and the RIS coefficient matrix to maximize artificial noise interference power while ensuring reliable signal reception for the desired user.The non-convex quadratic problem is transformed into an equivalent convex problem by using auxiliary variables and semidefinite relaxation methods.The transmitting beamforming vector and reflection coefficient matrix of the intelligent reflector are optimized jointly,which can restrain the eavesdropper from receiving information and ensure the reliable and secure communication of expected users.Finally,simulation results show that the secure transmission scheme based on the RIS improves the reliability and security of information transmission.

Key words: physical layer security, reconfigurable intelligent surface, non-line-of-sight

中图分类号:

TN92

高建邦, 高国旺. 一种智能超表面辅助的非视距安全通信方法[J]. 西安电子科技大学学报, 2023, 50(2): 64-70.

GAO Jianbang, GAO Guowang. Reconfigurable intelligent surface-assisted non-line-of-sight secure communication scheme[J]. Journal of Xidian University, 2023, 50(2): 64-70.

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参考文献 15

[1]	BARI N, MANI G, BERKOVICH S. Internet of Things as a Methodological Concept[C]//IEEE Proceedings of 4th International Conference on Computing for Geospatial Research and Application. Piscataway:IEEE, 2013:48-55.
[2]	杨欣, 毛雅淇, 王伶. 无人机辅助通信的密集无线网络MAC协议[J]. 西安电子科技大学学报, 2022, 49(3):10-20.
	YANG Xin, MAO Yaqi, WANG Ling. MAC Protocol for the Dense Wireless Network of UAV Assisted Communication[J]. Journal of Xidian University, 2022, 49(3):10-20.
[3]	杨颜博, 张嘉伟, 马建峰. 一种使用区块链保护车联网数据隐私的方法[J]. 西安电子科技大学学报, 2021, 48(3):21-30.
	YANG Yanbo, ZHANG Jiawei, MA Jianfeng. Method for Using the Blockchain to Protect Data Privacy of IoV[J]. Journal of Xidian University, 2021, 48(3):21-30.
[4]	ZOU Y, ZHU J, WANG X, et al. A Survey on Wireless Security:Technical Challenges,Recent Advances,and Future Trends[J]. Proceedings of the IEEE, 2016, 104(9):1727-1765. doi: 10.1109/PROC.5
[5]	SUN X, YANG W, CAI Y, et al. Secure Transmissions in Wireless Information and Power Transfer Millimeter-Wave Ultra-Dense Networks[J]. IEEE Transactions on Information Forensics and Security, 2018, 14(7):1817-1829. doi: 10.1109/TIFS.10206
[6]	HUO Y, FAN X, MA L, et al. Secure Communications in Tiered 5G Wireless Networks with Cooperative Jamming[J]. IEEE Transactions on Wireless Communications, 2019, 18(6):3265-3280. doi: 10.1109/TWC.7693
[7]	肖叶秋, 祝幸辉, 赵双睿, 等. 卫星通信系统的物理层安全性能分析[J]. 西安电子科技大学学报, 2021, 48(3):7-15.
	XIAO Yeqiu, ZHU Xinghui, ZHAO Shuangrui, et al. Analysis of Physical Layer Security Performance for Satellite Communication Systems[J]. Journal of Xidian University, 2021, 48(3):163-169.
[8]	GAO J, YUAN Z, QIU B, et al. Secure Multiusers Directional Modulation Scheme Based on Random Frequency Diverse Arrays in Broadcasting Systems[J]. Security and Communication Networks, 2020, 2020(2):1-11.
[9]	高建邦, 袁朝辉, 周静. 一种窃听用户位置未知的多播系统通信方案[J]. 西安电子科技大学学报, 2020, 47(5):6-14.
	GAO Jianbang, YUAN Zhaohui, ZHOU Jing. Transmission Synthesis Scheme for a Multicast System with Unknown Locations of Eavesdroppers[J]. Journal of Xidian University, 2020, 47(5):6-14.
[10]	高建邦, 袁朝辉, 邱彬. 期望接收机和窃听接收机位置相邻物理层安全通信方案[J]. 系统工程与电子技术, 2020, 42(5):8-18.
	GAO Jianbang, YUAN Zhaohui, QIU Bin. Physical-Layer Security Wireless Transmission Synthesis Scheme for Proximal Desired Receiver User and Eavesdropper[J]. Systems Engineering and Electronics, 2020, 42(5):1160-1165.
[11]	范文颖, 侯庆文, 陈先中. 77GHz宽带低副瓣毫米波微带天线设计[J]. 西安电子科技大学学报, 2022, 49(5):1-8.
	FAN Wenying, HOU Qingwen, CHEN Xianzhong. Design of the 77GHz Broadband Low Sidelobe Millimeter Wave Microstrip Antenna[J]. Journal of Xidian University, 2022, 49(5):1-8.
[12]	GAO J, QIU B, ZHOU J. Spatial Modulation and MP-WFRFT-Aided Multi-Beam Wireless Communication Scheme Based on Random Frequency Diverse Array[J]. Sensors, 2020, 20(18):1-18. doi: 10.3390/s20010001
[13]	XUE Q, ZHOU P, FANG X, et al. Performance Analysis of Interference and Eavesdropping Immunity in Narrow Beam mm Wave Networks[J]. IEEE Access, 2018, 6:67611-67624. doi: 10.1109/ACCESS.2018.2878741
[14]	朱政宇, 徐金雷, 孙钢灿, 等. 基于IRS辅助的SWIPT物联网系统安全波束成形设计[J]. 通信学报, 2021, 42(4):9-17.
	ZHU Zhengyu, XU Jinlei, SUN Gangcan, et al. Secure Beamforming Design for IRS-Assisted SWIPT Internet of Things System[J]. Journal of communication, 2021, 42(4):9-17.
[15]	TSE D, VISWANATH P. Fundamentals of Wireless Communication[M]. Oxford: Cambridge university press, 2005.

参数	数值
载波频率f_c/GHz	1
频控阵发射天线数N	16
RIS反射元件数M	32
信道噪声σ²/dBm	-100
期望用户最低信干噪比γ/dB	10
RIS位置/m	(500,0,5)