论文标题
超越智能反射表面：反射性交易跨表面辅助通信，用于全维覆盖范围扩展
Beyond Intelligent Reflecting Surfaces: Reflective-Transmissive Metasurface Aided Communications for Full-dimensional Coverage Extension
论文作者
论文摘要
在本文中，我们研究了一个智能的Omni-Surface（ios）辅助下行链路通信系统，其中移动用户的链接质量（MU）可以通过适当的iOS相移设计改进。与大多数仅以反射性方式转发信号的现有作品中智能反射表面（IRS）不同，iOS能够以反射性或传播方式将接收的信号转发到MU，从而增强无线覆盖范围。我们制定一个iOS相移优化问题，以最大化MU的下行链路光谱效率（SE）。分析iOS的最佳相移，并提出了基于分支和结合的算法来设计有限集中的iOS相移。仿真结果表明，与仅具有反射信号的IRS辅助系统相比，iOS辅助系统可以显着扩展覆盖范围。
In this paper, we study an intelligent omni-surface (IOS)-assisted downlink communication system, where the link quality of a mobile user (MU) can be improved with a proper IOS phase shift design. Unlike the intelligent reflecting surface (IRS) in most existing works that only forwards the signals in a reflective way, the IOS is capable to forward the received signals to the MU in either a reflective or a transmissive manner, thereby enhancing the wireless coverage. We formulate an IOS phase shift optimization problem to maximize the downlink spectral efficiency (SE) of the MU. The optimal phase shift of the IOS is analysed, and a branch-and-bound based algorithm is proposed to design the IOS phase shift in a finite set. Simulation results show that the IOS-assisted system can extend the coverage significantly when compared to the IRS-assisted system with only reflective signals.
