论文标题
耦合相移的星形 - 线网络的安全性增强
Security Enhancement for Coupled Phase-Shift STAR-RIS Networks
论文作者
论文摘要
研究了同时传输和反映可重构智能表面（星际）辅助通信系统的安全传播。考虑到《星际轮船》的耦合相位偏移和用户的公平保密要求，提出了一种新颖的安全束形设计，以解决独特的全空间相互窃听星际辅助辅助通信的互联网。特别是，开发了基于惩罚的秘密限制算法来解决所得的非凸优化问题，其中在每种迭代中都获得了耦合传输/反射系数的封闭式溶液。数值结果表明，1）所提出的方案比常规RI具有更高的保密能力； 2）4位离散相位变速器足以保密。
The secure transmission of the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided communication system is investigated. Considering the coupled phase shifts of STAR-RISs and the fair secrecy requirement of users, a novel secure beamforming design is proposed for addressing the unique full-space mutual eavesdropping of STAR-RIS aided communication. In particular, a penalty based secrecy beamforming algorithm is developed to solve the resulting non-convex optimization problem, where the closed-form solutions of the coupled transmission/reflection coefficients are obtained in each iteration. Numerical results demonstrate that 1) the proposed scheme achieves higher secrecy capacity than conventional RIS; 2) 4-bit discrete phase shifters are sufficient for secrecy guarantee.
