An Overview of Signal Processing Techniques for RIS/IRS-Aided Wireless Systems

In the past as well as present wireless communication systems, the wireless propagation environment is regarded as an uncontrollable black box that impairs the received signal quality, and its negative impacts are compensated for by relying on the design of various sophisticated transmission/recepti...

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Vydáno v:IEEE journal of selected topics in signal processing Ročník 16; číslo 5; s. 883 - 917
Hlavní autoři: Pan, Cunhua, Zhou, Gui, Zhi, Kangda, Hong, Sheng, Wu, Tuo, Pan, Yijin, Ren, Hong, Renzo, Marco Di, Lee Swindlehurst, A., Zhang, Rui, Zhang, Angela Yingjun
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.08.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
5G mobile communication
6G mobile communication
Channel estimation
Costs
Engineering Sciences
Hardware
intelligent reflecting surface (IRS)
localization
Location awareness
reconfigurable intelligent surface (RIS)
Signal and Image processing
Signal processing
Signal quality
transmission design
Wireless communication
Wireless communication systems
wireless systems
localization
transmission design
6G
wireless systems
channel estimation
Intelligent Reflecting Surface (IRS)
Reconfigurable Intelligent Surface (RIS)
ISSN:1932-4553, 1941-0484
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Shrnutí:In the past as well as present wireless communication systems, the wireless propagation environment is regarded as an uncontrollable black box that impairs the received signal quality, and its negative impacts are compensated for by relying on the design of various sophisticated transmission/reception schemes. However, the improvements through applying such schemes operating only at two endpoints (i.e., transmitter and receiver) are limited even after five generations of wireless systems. Reconfigurable intelligent surface (RIS) or intelligent reflecting surface (IRS) have emerged as a new and promising technology that can configure the wireless environment in a favorable manner by properly tuning the phase shifts of a large number of quasi passive and low-cost reflecting elements, thus standing out as a promising candidate technology for the next/sixth-generation (6G) wireless system. However, to reap the performance benefits promised by RIS/IRS, efficient signal processing techniques are crucial, for a variety of purposes such as channel estimation, transmission design, radio localization, and so on. In this paper, we provide a comprehensive overview of recent advances on RIS/IRS-aided wireless systems from the signal processing perspective.We also highlight promising research directions that are worthy of investigation in the future.
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ISSN:1932-4553
1941-0484
DOI:10.1109/JSTSP.2022.3195671