论文标题
可重新配置的智能表面最佳位置在毫米波网络中
Reconfigurable Intelligent Surface Optimal Placement in Millimeter-Wave Networks
论文作者
论文摘要
这项工作讨论了高方向毫米波链路中最佳的可重新配置智能表面放置。特别是，我们提出了一个新型的系统模型，该模型考虑了RIS平面上的传输梁足迹与RIS大小之间的关系。随后，基于模型，我们得出了接收的信号功率的端到端表达，此外，在RIS大小要么小或至少等于传输梁足迹的情况下，提供了近似的闭合形式表达式。此外，在表达式的基础上，我们得出了最大化端到端信噪比的最佳RIS位置。最后，我们通过模拟来证实分析结果，根据系统参数，揭示了有关最佳RIS放置的重要趋势。
This work discusses the optimal reconfigurable intelligent surface placement in highly-directional millimeter wave links. In particular, we present a novel system model that takes into account the relationship between the transmission beam footprint at the RIS plane and the RIS size. Subsequently, based on the model we derive the end-to-end expression of the received signal power and, furthermore, provide approximate closed-form expressions in the case that the RIS size is either much smaller or at least equal to the transmission beam footprint. Moreover, building upon the expressions, we derive the optimal RIS placement that maximizes the end-to-end signal-to-noise ratio. Finally, we substantiate the analytical findings by means of simulations, which reveal important trends regarding the optimal RIS placement according to the system parameters.
