A pinching antenna (PA)-assisted integrated sensing and secure communication system is investigated. In this system, a uniform linear array (ULA) is employed at the base station (BS) for signal transmission, while PAs are utilized to capture sensing echoes. For the purpose of secure communications, artificial noise (AN) is injected into the transmitted signal to degrade the eavesdropping capability. A target localization Cramér-Rao bound (CRB) minimization problem is formulated under both secrecy rate requirement and total transmit power constraint. Specifically, an alternating optimization (AO) algorithm is developed to tackle this highly non-convex problem, where the beamforming and AN optimization at the BS are obtained via semidefinite relaxation (SDR) and successive convex approximation (SCA) while the PA deployment is solved through element-wise optimization. Numerical results demonstrate that the proposed scheme consistently improves sensing accuracy compared to conventional fixed antennas. Dynamically adapting PA positions mitigates severe path loss and achieves robust sensing coverage over a wide area. Furthermore, it provides additional sensing-side spatial degrees of freedom, which compensate for the localization degradation induced by stringent secrecy requirements.
This paper investigates a secure integrated sensing and communication (ISAC) system assisted by a reconfigurable intelligent surface (RIS). We consider a challenging threat scenario involving a multi-antenna full-duplex eavesdropper that not only wiretaps confidential communication signals but also actively emits jammi...
Jia-Ling Han, Lei Yang, Yue-Ying Zhan et al.· IEEE International Symposium...· 0 citations
Numerical results demonstrate that: 1) Eve's velocities and positions can be accurately tracked with the proposed two-timescale framework in both multiple- and single-waveguide scenarios; and 2) PASS achieves superior secrecy rate compared to conventional multiple-antenna benchmarks.
Haowen Song, Jing-Jing Zhao, Xi-Dong Mu et al.· 1 citation
Integrated sensing and communication (ISAC) can concurrently enhance the hardware utilization and spectrum efficiency. However, due to the signal multiplexing and the openness of wireless channels, ISAC faces increased difficulty to prevent information eavesdropping. In this paper, we propose a robust secure beamformin...
Kai Chen, Jin-Lei Xu, Na Deng et al.· IEEE Transactions on Wireles...· 0 citations
In integrated sensing and communication (ISAC) systems, sensing information privacy is vulnerable to leakage, as ISAC waveforms can be intercepted by sensing eavesdroppers to infer target-related information, such as direction, location, and presence. To enhance the sensing security of ISAC, this paper studies the secu...
Xiao-Dong Zhao, Zhe Xing, Meng-Long Wu et al.· IEEE Transactions on Communi...· 0 citations
This paper investigates secure near-field integrated sensing and communication (ISAC) with pinching-antenna systems (PASS), where a base station serves legitimate users while localizing a target that may also eavesdrop on the transmitted data. We jointly design symbol-level precoding (SLP) and the transmit and receive...
Dimitrios Bozanis, V. Papanikolaou, Sotiris A. Tegos et al.· 1 citation
Integrated sensing and communication (ISAC) is envisioned as a cornerstone technology for next-generation networks, yet it introduces significant security risks in both communication and sensing domains. To mitigate the coverage limitations inherent in conventional mono-static or bi-static setups, this paper proposes a...
Yan Yang, Jian-Wei Zhao, Zhen-Dong Li et al.· 0 citations
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