隧道场景下RIS辅助无线通信性能优化方法  

Optimization Method for RIS Assisted Wireless Communication Performance in Tunnel Scenarios

作　　者：蒋广伟 金彦亮[1] 郑国莘[1] Jiang Guangwei

机构地区：[1]上海大学特种光纤与光接入网重点实验室,特种光纤与先进通信国际合作联合实验室,上海200444

出　　处：《工业控制计算机》2025年第2期30-32,共3页Industrial Control Computer

基　　金：上海市科委重点项目(22ZR1422200)。

摘　　要：智能反射面(Reconfigurable Intelligent Surface,RIS)的出现为轨道交通通信覆盖的增强及传输性能的提升提供了可能。将多个智能反射面并排部署到隧道当中时,存在接收点信号矢量相加互相抵消的可能,为此提出了隧道环境中RIS的场强合成原理以及同相叠加的条件。使用该方法探究了在28 GHz非视距场景下RIS提升信号覆盖的作用,对隧道中RIS阵列予以选择,最终普遍提高了接收点的信号场强,该研究为动态场景中部署RIS阵列提供了方案。The emergence of Reconfigurable Intelligent Surface(RIS)provides possibilities for enhancing communication coverage and improving transmission performance in rail transit.When multiple intelligent reflective surfaces are deployed side by side in tunnels in this paper,there is a possibility of receiving point signal vectors adding and canceling each other.Therefore,this paper proposes the principle of field strength synthesis for RIS in tunnel environments and the conditions for in-phase superposition.This method is used to explore the effect of RIS on signal coverage in 28 GHz non line of sight scenarios,selecting RIS arrays in tunnels,and ultimately improving the signal field strength of receiving points.This study provides a solution for deploying RIS arrays in dynamic scenes.

关 键 词：智能反射面 轨道交通 28 GHz 非视距 

分 类 号：U45[建筑科学—桥梁与隧道工程]