计算机科学
物理层
波束赋形
保密
信道状态信息
预编码
有可能
发射机
计算机网络
频道(广播)
无线
计算机安全
电信
多输入多输出
心理学
心理治疗师
作者
Xin Liu,Rui Wang,Yiliang Liu,Donglan Liu,Fangzhe Zhang,Long Sun,Tom H. Luan
标识
DOI:10.1109/pimrc56721.2023.10293929
摘要
The paper explores the issue of multiple-user fairness of intelligent reflecting surface (IRS)-assisted physical layer security (PLS) in the digital twin (DT)-enabler power grid. Previous research works have focused on achieving secrecy rate fairness through beamforming or phase shift optimization. However, in the DT-enabler power grid, the secrecy rate is not available as the instantaneous channel state information (CSI) of the passive eavesdropper is unknown. To address these challenges, we apply an expression for secrecy outage probability, measured based on the statistical CSI of the eavesdropper for the scenario where multiple DT users are present. Using zero-forcing (ZF) precoding at the transmitter, we formulate the problem of achieving fairness in secrecy outage probability, and then solve it by optimizing the phase shift matrices. Simulation results demonstrate that the proposed methods can achieve higher fairness among users in comparison to existing IRS-assisted PLS schemes.
科研通智能强力驱动
Strongly Powered by AbleSci AI