Reconfigurable Intelligent Surfaces for 6G Systems: Principles, Applications, and Research Directions

被引：580
作者：
Pan, Cunhua [1 ]
Ren, Hong [2 ]
Wang, Kezhi [3 ]
Kolb, Jonas Florentin [1 ]
Elkashlan, Maged [1 ]
Chen, Ming [2 ]
Di Renzo, Marco [4 ]
Hao, Yang [1 ]
Wang, Jiangzhou [5 ]
Swindlehurst, A. Lee [6 ]
You, Xiaohu [2 ]
Hanzo, Lajos [7 ]
机构：
[1] Queen Mary Univ London, London, England
[2] Southeast Univ, Nanjing, Peoples R China
[3] Northumbria Univ, Newcastle Upon Tyne, Tyne & Wear, England
[4] Univ Paris Saclay, Lab Signals & Syst, Paris, France
[5] Univ Kent, Canterbury, Kent, England
[6] Univ Calif Irvine, Irvine, CA USA
[7] Univ Southampton, Southampton, Hants, England
来源：
IEEE COMMUNICATIONS MAGAZINE | 2021年 / 59卷 / 06期
基金：
英国工程与自然科学研究理事会; 美国国家科学基金会; 欧洲研究理事会; 中国国家自然科学基金;
关键词：
WIRELESS COMMUNICATION; DESIGN;
D O I：
10.1109/MCOM.001.2001076
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs) are regarded as one of the most promising and revolutionizing techniques for enhancing the spectrum and/or energy efficiency of wireless systems. These devices are capable of reconfiguring the wireless propagation environment by carefully tuning the phase shifts of a large number of low-cost passive reflecting elements. In this article, we aim to answer four fundmental questions: 1) Why do we need RISs? 2) What is an RIS? 3) What are RIS's applications? 4) What are the relevant challenges and future research directions? In response, eight promising research directions are pointed out.
引用
收藏
页码：14 / 20
页数：7
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