Securing the Sensing Functionality in ISAC Networks: An Artificial Noise Design

被引:0
作者
Zou, Jiaqi [1 ,2 ]
Masouros, Christos [2 ]
Liu, Fan [3 ]
Sun, Songlin [4 ]
机构
[1] Beijing Univ Posts & Telecommun BUPT, Sch Informat & Commun Engn, Beijing 100876, Peoples R China
[2] UCL, Dept Elect & Elect Engn, London WC1E 7JE, England
[3] Southern Univ Sci & Technol, Sch Syst Design & Intelligent Mfg, Shenzhen 518055, Peoples R China
[4] Beijing Univ Posts & Telecommun BUPT, Beijing 100876, Peoples R China
基金
中国国家自然科学基金;
关键词
Sensors; Receivers; Radar; Security; Array signal processing; Signal to noise ratio; Integrated sensing and communications; sensing security; mutual information; artificial noise; MIMO RADAR; OPTIMIZATION; INFORMATION; SYSTEMS;
D O I
10.1109/TVT.2024.3422036
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Integrated sensing and communications (ISAC) systems employ dual-functional signals to simultaneously accomplish radar sensing and wireless communication tasks. However, ISAC systems open up new sensing security vulnerabilities to malicious illegitimate eavesdroppers (Eves) that can also exploit the transmitted waveform to extract sensing information from the environment. In this paper, we investigate the beamforming design to enhance the sensing security of an ISAC system, where the communication user (CU) serves as a sensing Eve. Our objective is to maximize the mutual information (MI) for the legitimate radar sensing receiver while considering the constraint of the MI for the Eve and the quality of service to the CUs. Then, we consider the artificial noise (AN)-aided beamforming to further enhance the sensing security. Simulation results demonstrate that our proposed methods achieve MI improvement of the legitimate receiver while limiting the sensing MI of the Eve, compared with the baseline scheme, and that the utilization of AN further contributes to sensing security.
引用
收藏
页码:17800 / 17805
页数:6
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