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On The Optimal Number of Reflecting Elements for Reconfigurable Intelligent Surfaces
[article]
2020
arXiv
pre-print
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The system rate, energy efficiency, and their trade-off are optimized with respect to the number of individually tunable elements of the intelligent surface. ...
Numerical results confirm the optimality of the proposed methods and show the potential gains of reconfigurable intelligent surfaces. ...
δ ď 1, which sets an upper-bound on the maximum number of elements that can be placed on the RIS in order for the considered path-loss model to be physically meaningful. ...
arXiv:2007.07665v1
fatcat:w6oc4epnhvf2lkeouoqhwm62yi
On The Optimal Number of Reflecting Elements for Reconfigurable Intelligent Surfaces
2020
IEEE Wireless Communications Letters
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δ ď 1, which provides a simple upperbound on the maximum number of elements that can be placed on the RIS in order for the considered path-loss model to be physically meaningful. ...
intelligent surfaces (RISs) are used to coat environmental objects that are present in the propagation environment. ...
doi:10.1109/lwc.2020.3034686
fatcat:engho4tbqrhqpjwwfg7cjvymeu
Reconfigurable Intelligent Computational Surfaces: When Wave Propagation Control Meets Computing
[article]
2022
arXiv
pre-print
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To realize the concept of the smart radio environment, reconfigurable intelligent surfaces (RISs) are a promising technology for offering programmable propagation of impinging electromagnetic signals via ...
In this event, we introduce the concept of reconfigurable intelligent computational surface (RICS), which is composed of two reconfigurable multifunctional layers: the 'reconfigurable beamforming layer ...
It is worth mentioning that there exists an optimal trade-off between the reflected power and the refracted power for a given number of elements of the RICS.
V. ...
arXiv:2208.04509v2
fatcat:idr7mhisuje4ddeq63wxdx4xju
Digital Reconfigurable Intelligent Surfaces: On the Impact of Realistic Reradiation Models
[article]
2022
arXiv
pre-print
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Reconfigurable intelligent surface (RIS) is an emerging technology that is under investigation for different applications in wireless communications. ...
In this chapter, we aim to study the impact of realistic reradiation models for RISs as a function of the sub-wavelength inter-distance between nearby elements of the RIS, the quantization levels of the ...
INTRODUCTION
Reconfigurable Intelligent Surfaces and Holographic Surfaces In the last few years, intelligent surfaces have been the subject of extensive research activities in the context of wireless ...
arXiv:2205.09799v1
fatcat:nsylmidyf5bhbltybwplfekcv4
Editorial
2022
Intelligent and Converged Networks
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The goal of this Special Issue on "Reconfigurable Intelligent Surface Aided Wireless Communications" of Intelligent and Converged Networks (ICN) is to attract high-quality papers of original research on ...
RIS), also known as intelligent reflecting surface or large intelligent surface, is an emerging new physical-layer technology in the field of wireless communications. ...
They provided both the reviewers and the editors, most importantly the readers, with a fascinating snapshot of the range of ongoing research in the area of RIS. ...
doi:10.23919/icn.2022.0008
fatcat:ws2me52pivcnff3lq7vbuvw2hu
Wireless Communications Through Reconfigurable Intelligent Surfaces
2019
IEEE Access
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The recent advent of reconfigurable intelligent surfaces in wireless communications enables, on the other hand, network operators to control the scattering, reflection, and refraction characteristics of ...
INDEX TERMS 6G, large intelligent surfaces, meta-surfaces, reconfigurable intelligent surfaces, smart reflect-arrays, software-defined surfaces, wireless communications, wireless networks. ...
and the single-antenna destination (D) for the ith reflecting meta-surface (i = 1, 2, . . . , N ), and N is the number of reflecting meta-surfaces of the RIS. ...
doi:10.1109/access.2019.2935192
fatcat:6pjbpzbisnduxfykkelv42suhi
Wireless Communications Through Reconfigurable Intelligent Surfaces
[article]
2019
arXiv
pre-print
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The recent advent of reconfigurable intelligent surfaces in wireless communications enables, on the other hand, network operators to control the scattering, reflection, and refraction characteristics of ...
on the fundamental differences with other technologies, the most important open research issues to tackle, and the reasons why the use of reconfigurable intelligent surfaces necessitates to rethink the ...
Showed that increasing the number of RIS reflecting elements is more beneficial than increasing the number of antenna elements at BS. ...
arXiv:1906.09490v2
fatcat:g37e2e7lnbgz7lhubkb3xk3wnu
Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come
2019
EURASIP Journal on Wireless Communications and Networking
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This originates from the large number of parameters to be optimized based on the contextual information that is gathered by the reconfigurable intelligent meta-surfaces and that is made available to the ...
In this case, however, the responses of the reconfigurable intelligent meta-surfaces on O2, O3, and O4 are controlled and optimized to refract or reflect towards anomalous (i.e., not compliant with Snell's ...
doi:10.1186/s13638-019-1438-9
fatcat:fb6735fzz5gfxm4lx6j3qyeq6q
Relay Aided Intelligent Reconfigurable Surfaces: Achieving the Potential Without So Many Antennas
[article]
2020
arXiv
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much smaller numbers of reflecting elements. ...
This paper proposes a novel relay-aided intelligent reconfigurable surface (IRS) architecture for future wireless communication systems. ...
with κ1 representing the power reflection efficiency of the first
proposed relay-aided intelligent reconfigurable surface. ...
arXiv:2006.06644v1
fatcat:cihhrhmoqzdgddnajhvarlxgkq
Reconfigurable Surfaces for Wireless Communications
2022
Zenodo
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Reconfigurable surfaces have recently attracted the interest of researchers in wireless communications. ...
In this paper, we overview the potential applications of reconfigurable surfaces in wireless communications and discuss their design requirements for emerging wireless applications. ...
ACKNOWLEDGMENT This work was supported by the European Commission through the H2020 ARIADNE (grant 871464) and RISE-6G (grant 101017011) projects, and the Fulbright Foundation. ...
doi:10.5281/zenodo.7430185
fatcat:fijtruuj6ng5rbluq6njh23d5y
Guest Editorial Special Issue on "Wireless Networks Empowered by Reconfigurable Intelligent Surfaces"
2020
IEEE Journal on Selected Areas in Communications
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These contributions address key challenges for the design and analysis of RISs for application to wireless communications and networks. ...
of this SI and the continuous assistance in the various phases of the SI review, paper acceptance, and final publication. ...
ON THE SPECIAL ISSUE With the above vision, a Call for Papers for the Special Issue (SI) on "Wireless Networks Empowered by Reconfigurable Intelligent Surfaces", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS ...
doi:10.1109/jsac.2020.3007048
fatcat:4rt3pnhcrrcxdouk5ty65le5ia
Smart Radio Environments Empowered by AI Reconfigurable Meta-Surfaces: An Idea Whose Time Has Come
[article]
2019
arXiv
pre-print
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In a nutshell, this paper is focused on discussing how the availability of intelligent reconfigurable meta-surfaces will allow wireless network operators to redesign common and well-known network communication ...
wireless concept, where the environmental objects are coated with artificial thin films of electromagnetic and reconfigurable material (that are referred to as intelligent reconfigurable meta-surfaces ...
This originates from the large number of parameters to be optimized based on the contextual information that is gathered by the intelligent reconfigurable meta-surfaces and that is made available to the ...
arXiv:1903.08925v1
fatcat:xmrqoai4pzfvxfsbwmpdzmqkca
Maximizing dirty-paper coding rate of RIS-assisted multi-user MIMO broadcast channels
2022
Intelligent and Converged Networks
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We consider a downlink multi-user scenario and investigate the use of reconfigurable intelligent surfaces (RISs) to maximize the dirty-paper-coding (DPC) sum rate of the RIS-assisted broadcast channel. ...
reflection coefficients to directly maximize the sum capacity of the broadcast channel. ...
Acknowledgment This work was partially supported by the National Science Foundation (Nos. CNS-2107216 and CNS-2128368). ...
doi:10.23919/icn.2022.0004
fatcat:yhm2sm7qufb4rfv54xikvcrmju
Reconfigurable Intelligent Surfaces for 5G and beyond Wireless Communications: A Comprehensive Survey
2021
Energies
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This paper presents a comprehensive literature review on reconfigurable intelligent surfaces (RISs) and assisted application areas. ...
With the RIS, the network operators can control radio waves' scattering, reflection, and refraction characteristics by resolving the harmful properties of environmental wireless propagation. ...
Acknowledgments: The authors thanks to the anonymous reviewer and editors for their constructive comments.
Conflicts of Interest: The authors declare no conflict of interests. ...
doi:10.3390/en14248219
doaj:cd2fcec8df7c477faf7ddd4d897184f9
fatcat:7ntjkk4znneplmpfs3tkcm32sq
RECONFIGURABLE INTELLIGENT SURFACES FOR WIRELESS COMMUNICATIONS: BEYOND 5G
2021
International Journal of Engineering Applied Sciences and Technology
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One such technology is Intelligent Reflecting Surfaces (IRS). IRS caters to focusing the reception of the signal, only to the intended receiver, without loss of power. ...
The paper deals about what are Intelligent Reflecting Surfaces, features, false ideas, and critical analysis of how IRS can be a part of future beyond 5G. ...
SNR grows quadratically with the number of elements for the surfaces which are used practically [2] . ...
doi:10.33564/ijeast.2021.v06i04.048
fatcat:3lyhraonhrafplwgcppqhc3tgy
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