Active Reconfigurable Intelligent Surface Aided Surveillance Scheme
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影响因子：4.6
所属单位：School of Computer Science and Information Engineering, Hefei University of Technology
发表刊物：IEEE Wireless Communications Letters
项目来源：the National Natural Science Foundation of China under Grant 61971176
关键字：Proactive eavesdropping, active reconfigurable intelligent surface, double fading, eavesdropping rate
摘要：This letter attempts to design a surveillance scheme by adopting an active reconfigurable intelligent surface (RIS). Different from the conventional passive RIS, the active RIS could not only adjust the phase shift but also amplify the amplitude of the reflected signal. With such reflecting, the reflected signal of active RIS could jointly adjust the signal to noise ratio (SNR) of the suspicious receiver and the legitimate monitor, hence the proactive eavesdropping at the physical layer could be effectively realized. We formulate the optimization problem with the target of maximizing the eavesdropping rate to obtain the optimal reflecting coefficient matrix of the active RIS. The formulated optimization problem is nonconvex fractional programming and challenging to deal with. We then solve the problem by approximating it as a series of convex constraints. Simulation results validate the effectiveness of our designed surveillance scheme and show that the proposed active RIS aided surveillance scheme has good performance in terms of eavesdropping rate compared with the scheme with passive RIS.
合写作者：Yibo Yi,Hongwei Zhang,Kun Li
第一作者：Xinyue Hu
论文类型：论文集
通讯作者：Caihong Kai
学科门类：工学
文献类型：J
卷号：12
期号：2
页面范围：356-360
ISSN号：2162-2345
是否译文：否
发表时间：2022-12-07
收录刊物：SCI、EI