Journal
IEEE COMMUNICATIONS MAGAZINE
Volume 59, Issue 6, Pages 14-20Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MCOM.001.2001076
Keywords
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Funding
- EU [871464, 101017011]
- National Natural Science Foundation of China [61871128]
- EPSRC [EP/R035393/1]
- U.S. National Science Foundation [ECCS-2030029 L]
- European Research Council [789028]
- EPSRC [EP/R035393/1] Funding Source: UKRI
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Reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs) are considered as one of the most promising and revolutionizing techniques for enhancing the spectrum and energy efficiency of wireless systems by reconfiguring the wireless propagation environment through carefully tuning the phase shifts of a large number of low-cost passive reflecting elements. The article aims to address four fundamental questions and highlights eight promising 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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