Secure Transmit Beamforming for Radar-Communication System Without Eavesdropper CSI

Article Computer Science, Information Systems

Covert Beamforming Design for Intelligent-Reflecting-Surface-Assisted IoT Networks

Shuai Ma et al.

Summary: This article investigates covert beamforming design for intelligent reflecting surface (IRS)-assisted Internet-of-Things (IoT) networks. The joint beamformer design of Alice and IRS is considered to maximize the covert rate of Bob. Two scenarios with perfect and imperfect knowledge of Willie's channel state information (WCSI) are analyzed, and covert and robust beamformers are proposed accordingly.

IEEE INTERNET OF THINGS JOURNAL (2022)

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Article Engineering, Electrical & Electronic

Secure Dual-Functional Radar-Communication Transmission: Exploiting Interference for Resilience Against Target Eavesdropping

Nanchi Su et al.

Summary: This study investigates security solutions for dual-functional radar communication (DFRC) systems, which successfully achieve secure transmission of radar target detection and downlink cellular communication. The proposed approach combines transmit waveform and receive beamforming techniques to enhance signal-to-interference-plus-noise ratio (SINR) of the radar and utilizes constructive and destructive interference for improved security against potential eavesdropping. The numerical results demonstrate the effectiveness of the proposed design in achieving secure transmission with enhanced performance compared to benchmark DFRC techniques.

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (2022)

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Article Engineering, Electrical & Electronic

Secure Radar-Communication Systems With Malicious Targets: Integrating Radar, Communications and Jamming Functionalities

Nanchi Su et al.

Summary: This article investigates the physical layer security in a MIMO dual-functional radar-communication system, utilizing artificial noise for transmission secrecy and formulating optimization problems to guarantee worst-case performance. Computational complexity is analyzed for different scenarios and robust optimization approaches are proposed to handle target location uncertainty and CSI errors. Numerical results demonstrate the feasibility of the algorithms in the presence of CSI errors, with the secrecy rate increasing as the angular interval of location uncertainty grows.

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (2021)

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Article Engineering, Electrical & Electronic