Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint

Mohamed Akrout; Faouzi Bellili; Amine Mezghani; Josef A. Nossek

doi:10.1109/IEEECONF59524.2023.10476858

Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint

Mohamed Akrout, Faouzi Bellili, Amine Mezghani, Josef A. Nossek

Chair of Circuit Theory and Signal Processing (2008 — 2021)

Univ of Manitoba

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

We investigate the benefits of mutual coupling effects between the passive elements of intelligent reconfigurable surfaces (IRSs) on maximizing the achievable rate of downlink Internet-of-Things (IoT) networks. In this paper, we present an electromagnetic (EM) coupling model for IRSs whose elements are connected minimum scattering antennas (i.e., dipoles). Using Chu's theory, we incorporate the finite antenna size constraint on each element of the IRS to obtain the IRS mutual impedance matrix. By maximizing the IRS phase shifters using the gradient ascent procedure, our numerical results show that mutual coupling is indeed crucial to avoid the achievable rate degradation when the spacing between IRS elements is down to a fraction of the wavelength.

Original language	English
Title of host publication	Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023
Editors	Michael B. Matthews
Publisher	IEEE Computer Society
Pages	1589-1594
Number of pages	6
ISBN (Electronic)	9798350325744
DOIs	https://doi.org/10.1109/IEEECONF59524.2023.10476858
State	Published - 2023
Event	57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023 - Pacific Grove, United States Duration: 29 Oct 2023 → 1 Nov 2023

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)	1058-6393

Conference

Conference	57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023
Country/Territory	United States
City	Pacific Grove
Period	29/10/23 → 1/11/23

Keywords

Chu's limit
Circuit theory for communications
canonical minimum scattering antennas
intelligent reconfigurable surfaces
mutual coupling

Access to Document

10.1109/IEEECONF59524.2023.10476858

Cite this

Akrout, M., Bellili, F., Mezghani, A., & Nossek, J. A. (2023). Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint. In M. B. Matthews (Ed.), Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023 (pp. 1589-1594). (Conference Record - Asilomar Conference on Signals, Systems and Computers). IEEE Computer Society. https://doi.org/10.1109/IEEECONF59524.2023.10476858

Akrout, Mohamed ; Bellili, Faouzi ; Mezghani, Amine et al. / Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint. Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023. editor / Michael B. Matthews. IEEE Computer Society, 2023. pp. 1589-1594 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

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title = "Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint",

abstract = "We investigate the benefits of mutual coupling effects between the passive elements of intelligent reconfigurable surfaces (IRSs) on maximizing the achievable rate of downlink Internet-of-Things (IoT) networks. In this paper, we present an electromagnetic (EM) coupling model for IRSs whose elements are connected minimum scattering antennas (i.e., dipoles). Using Chu's theory, we incorporate the finite antenna size constraint on each element of the IRS to obtain the IRS mutual impedance matrix. By maximizing the IRS phase shifters using the gradient ascent procedure, our numerical results show that mutual coupling is indeed crucial to avoid the achievable rate degradation when the spacing between IRS elements is down to a fraction of the wavelength.",

keywords = "Chu's limit, Circuit theory for communications, canonical minimum scattering antennas, intelligent reconfigurable surfaces, mutual coupling",

author = "Mohamed Akrout and Faouzi Bellili and Amine Mezghani and Nossek, {Josef A.}",

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Akrout, M, Bellili, F, Mezghani, A & Nossek, JA 2023, Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint. in MB Matthews (ed.), Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023. Conference Record - Asilomar Conference on Signals, Systems and Computers, IEEE Computer Society, pp. 1589-1594, 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023, Pacific Grove, United States, 29/10/23. https://doi.org/10.1109/IEEECONF59524.2023.10476858

Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint. / Akrout, Mohamed; Bellili, Faouzi; Mezghani, Amine et al.
Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023. ed. / Michael B. Matthews. IEEE Computer Society, 2023. p. 1589-1594 (Conference Record - Asilomar Conference on Signals, Systems and Computers).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Nossek, Josef A.

PY - 2023

Y1 - 2023

N2 - We investigate the benefits of mutual coupling effects between the passive elements of intelligent reconfigurable surfaces (IRSs) on maximizing the achievable rate of downlink Internet-of-Things (IoT) networks. In this paper, we present an electromagnetic (EM) coupling model for IRSs whose elements are connected minimum scattering antennas (i.e., dipoles). Using Chu's theory, we incorporate the finite antenna size constraint on each element of the IRS to obtain the IRS mutual impedance matrix. By maximizing the IRS phase shifters using the gradient ascent procedure, our numerical results show that mutual coupling is indeed crucial to avoid the achievable rate degradation when the spacing between IRS elements is down to a fraction of the wavelength.

AB - We investigate the benefits of mutual coupling effects between the passive elements of intelligent reconfigurable surfaces (IRSs) on maximizing the achievable rate of downlink Internet-of-Things (IoT) networks. In this paper, we present an electromagnetic (EM) coupling model for IRSs whose elements are connected minimum scattering antennas (i.e., dipoles). Using Chu's theory, we incorporate the finite antenna size constraint on each element of the IRS to obtain the IRS mutual impedance matrix. By maximizing the IRS phase shifters using the gradient ascent procedure, our numerical results show that mutual coupling is indeed crucial to avoid the achievable rate degradation when the spacing between IRS elements is down to a fraction of the wavelength.

KW - Chu's limit

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KW - canonical minimum scattering antennas

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Akrout M, Bellili F, Mezghani A, Nossek JA. Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint. In Matthews MB, editor, Conference Record of the 57th Asilomar Conference on Signals, Systems and Computers, ACSSC 2023. IEEE Computer Society. 2023. p. 1589-1594. (Conference Record - Asilomar Conference on Signals, Systems and Computers). doi: 10.1109/IEEECONF59524.2023.10476858

Physically Consistent Models for Intelligent Reflective Surface-Assisted Communications under Mutual Coupling and Element Size Constraint

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