Reconfigurable Intelligent Surface-Aided Secure Integrated Radar and Communication Systems
Tong-Xing Zheng, Xin Chen, Lan Lan, Ying Ju, Xiaoyan Hu, Rongke Liu,, Derrick Wing Kwan Ng, and Tiejun Cui

TL;DR
This paper proposes RIS-aided transmission schemes for secure integrated radar and communication systems, optimizing beamforming to enhance secrecy rates and addressing eavesdropper CSI uncertainties, with algorithms tailored for RCCE and DFRC systems.
Contribution
It introduces novel RIS-assisted secure transmission schemes with optimized algorithms for both RCCE and DFRC systems, considering imperfect eavesdropper CSI.
Findings
RIS-aided schemes significantly improve secrecy rate.
RCCE system outperforms DFRC in secrecy rate.
Algorithms effectively handle imperfect CSI.
Abstract
Despite the enhanced spectral efficiency brought by the integrated radar and communication technique, it poses significant risks to communication security when confronted with malicious radar targets. To address this issue, a reconfigurable intelligent surface (RIS)-aided transmission scheme is proposed to improve secure communication in two systems, i.e., the radar and communication co-existing (RCCE) system, where a single transmitter is utilized for both radar sensing and communication, and the dual-functional radar and communication (DFRC) system. At the design stage, optimization problems are formulated to maximize the secrecy rate while satisfying the radar detection constraint via joint active beamforming at the base station and passive beamforming of RIS in both systems. Particularly, a zero-forcing-based block coordinate descent (BCD) algorithm is developed for the RCCE system.…
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Taxonomy
TopicsAdvanced Antenna and Metasurface Technologies · Radar Systems and Signal Processing · Space Satellite Systems and Control
MethodsBalanced Selection
