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

被引:0
作者
Parizotto, Ricardo [1 ]
Castanheira, Lucas [1 ]
Bonetti, Fernanda [1 ]
Santos, Anderson [1 ]
Schaeffer-Filho, Alberto [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil
关键词
Wireless communication; 6G mobile communication; NOMA; Reconfigurable intelligent surfaces; Hardware; Energy efficiency; 5G mobile communication;
D O I
10.1109/MCOM.001.2000904
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:60 / 65
页数:6
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