Robust and secure communications using dynamic rotations reconfigurable intelligent surface

IF 4.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

ICT Express Pub Date : 2025-06-01 DOI:10.1016/j.icte.2025.03.010

Kunyu Li, Guoping Zhang, Hongbo Xu, Ruijie Li, Yun Chen, Xingxing Huang

引用次数: 0

Abstract

This paper investigates the secure transmission problem using a dynamically reconfigurable intelligent surface (RIS). Considering an eavesdropping scenario where a multi-antenna eavesdropper has inadequate channel state information, a resilient beamforming strategy is proposed to simultaneously optimize the active beamforming at the base station and rotational angles of the RIS in order to improve the system's secrecy rate. A continuous-time propagation model is used to explain the dynamically rotating RIS to maximize the cascaded channel gain. Simulation findings validate the security benefits of the resilient beamforming approach, and the dynamic rotation technique increases the secrecy rate while reducing delay spread.

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使用动态旋转可重构智能表面的稳健和安全通信

研究了基于动态可重构智能面（RIS）的安全传输问题。针对多天线窃听者信道状态信息不足的窃听场景，提出了一种弹性波束形成策略，同时优化基站有源波束形成和RIS旋转角度，以提高系统的保密率。为了使级联信道增益最大化，采用连续时间传播模型来解释动态旋转的RIS。仿真结果验证了弹性波束形成方法的安全性，动态旋转技术在降低延迟扩散的同时提高了保密率。

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

ICT Express Multiple-

CiteScore

10.20

自引率

1.90%

发文量

167

审稿时长

35 weeks

期刊介绍： The ICT Express journal published by the Korean Institute of Communications and Information Sciences (KICS) is an international, peer-reviewed research publication covering all aspects of information and communication technology. The journal aims to publish research that helps advance the theoretical and practical understanding of ICT convergence, platform technologies, communication networks, and device technologies. The technology advancement in information and communication technology (ICT) sector enables portable devices to be always connected while supporting high data rate, resulting in the recent popularity of smartphones that have a considerable impact in economic and social development.