无线
无线网络
计算机科学
频道(广播)
反射(计算机编程)
软件部署
Wi-Fi阵列
无线电传播
计算机网络
电信
电子工程
计算机体系结构
工程类
操作系统
程序设计语言
作者
Qingqing Wu,Shuowen Zhang,Beixiong Zheng,Changsheng You,Rui Zhang
标识
DOI:10.1109/tcomm.2021.3051897
摘要
Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capable of dynamically altering wireless channels to enhance the communication performance. It is thus expected that the new IRS-aided hybrid wireless network comprising both active and passive components will be highly promising to achieve a sustainable capacity growth cost-effectively in the future. Despite its great potential, IRS faces new challenges to be efficiently integrated into wireless networks, such as reflection optimization, channel estimation, and deployment from communication design perspectives. In this paper, we provide a tutorial overview of IRS-aided wireless communications to address the above issues, and elaborate its reflection and channel models, hardware architecture and practical constraints, as well as various appealing applications in wireless networks. Moreover, we highlight important directions worthy of further investigation in future work.
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