Waveform Design for Secure ISAC System based on Interference Exploitation

This paper focuses on enhancing the physical layer (PHY) security for the integrated sensing and communications (ISAC) system by designing the dual-functional transmit waveform based on constructive interference (CI) technology, a symbol-level precoding (SLP) technology that utilize multi-user inter...

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Bibliographic Details
Published in2023 IEEE Globecom Workshops (GC Wkshps) pp. 413 - 419
Main Authors I, Peiwen Huang, Liu, Fan, Dong, Fuwang
Format Conference Proceeding
LanguageEnglish
Published IEEE 04.12.2023
Subjects
constructive interfer-ence
Cramer-Rao bound
Cramer-Rao bounds
Estimation
Integrated sensing and communication
Interference
joint beamforming
Physical layer
physical layer security
Precoding
Radar
Simulation
successive convex approximation
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Summary:This paper focuses on enhancing the physical layer (PHY) security for the integrated sensing and communications (ISAC) system by designing the dual-functional transmit waveform based on constructive interference (CI) technology, a symbol-level precoding (SLP) technology that utilize multi-user interference (MUI). Different from con-ventional communication system, sensing target can become potential eavesdropper in ISAC system, since radar probing signal carries communication information. To handle this security problem, a dual-functional waveform is designed by minimizing the Cramer-Rao bound (CRB) of target's angle estimation under the constraints of CI, destructive interference (DI) and power budget. Simulation results demonstrate that the proposed solution achieves on optimal trade-off between sensing, communication, and PHY security.
DOI:10.1109/GCWkshps58843.2023.10465206