Journal
IEEE COMMUNICATIONS MAGAZINE
Volume 59, Issue 6, Pages 60-65Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MCOM.001.2000904
Keywords
Wireless communication; 6G mobile communication; NOMA; Reconfigurable intelligent surfaces; Hardware; Energy efficiency; 5G mobile communication
Funding
- CNPq
- FAPERGS
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The article explores the significance and applications of reconfigurable intelligent surfaces in wireless systems, as well as highlighting future research directions.
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.
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