Secure Beamforming for RIS-Aided ISAC System With CRB Minimization

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-21 DOI:10.1109/LCOMM.2025.3562748

Shuo Yang;Chenhao Qi;Wei Ci;Wu Luo

引用次数: 0

Abstract

Since the security is an important issue in integrated sensing and communications (ISAC), especially when the targets also act as potential eavesdroppers, we investigate the secure beamforming design for the reconfigurable intelligent surface (RIS)-aided ISAC system. Aiming at minimizing the worst-case Cramér-Rao bound of the two-dimensional direction-of-arrival estimation of the eavesdropper, we consider the joint design of transmit beamforming and RIS phase shifts subject to the constraints of signal-to-interference-plus-noise ratio (SINR) of each user and the worst-case eavesdropping SINR. To solve this joint optimization problem, we propose an algorithm based on penalty dual decomposition. Numerical results demonstrate the effectiveness of the proposed algorithm.

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基于CRB最小化的ris辅助ISAC系统安全波束形成

由于安全是集成传感与通信（ISAC）中的一个重要问题，特别是当目标同时也是潜在的窃听者时，我们研究了可重构智能表面（RIS）辅助集成传感与通信系统的安全波束形成设计。为了使窃听器二维到达方向估计的最坏情况cram - rao界最小，在每个用户信噪比（SINR）和最坏情况窃听SINR的约束下，考虑了发射波束形成和RIS相移的联合设计。为了解决这一联合优化问题，我们提出了一种基于惩罚对偶分解的算法。数值结果表明了该算法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.