Intelligent reflecting surface-aided wideband THz communications: modeling and analysis

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• dc.contributor.author Dovelos, Konstantinos
• dc.contributor.author Assimonis, Stylianos D.
• dc.contributor.author Ngo, Hien Quoc
• dc.contributor.author Bellalta, Boris
• dc.contributor.author Matthaiou, Michail
• dc.date.accessioned 2023-02-15T07:21:21Z
• dc.date.available 2023-02-15T07:21:21Z
• dc.date.issued 2021
• dc.description Comunicació presentada a 25th International ITG Workshop on Smart Antennas (WSA 2021), celebrat del 10 al 12 de novembre de 2021 a Costa Blava, França.
• dc.description.abstract In this paper, we study the performance of wideband terahertz (THz) communications assisted by an intelligent reflecting surface (IRS). Specifically, we first introduce a generalized channel model that is suitable for electrically large THz IRSs operating in the near-field. Unlike prior works, our channel model takes into account the spherical wavefront of the emitted electromagnetic waves and the spatial-wideband effect. We next show that conventional frequency-flat beamfocusing significantly reduces the power gain due to beam squint, and hence is highly suboptimal. More importantly, we analytically characterize this reduction when the spacing between adjacent reflecting elements is negligible, i.e., holographic reflecting surfaces. Numerical results corroborate our analysis and provide important insights into the design of future IRS-aided THz systems.
• dc.description.sponsorship This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 101001331).
• dc.format.mimetype application/pdf
• dc.identifier.citation Dovelos K, Assimonis SD, Ngo HQ, Bellalta B, Matthaiou M. Intelligent reflecting surface-aided wideband THz communications: modeling and analysis. In: 25th International ITG Workshop on Smart Antennas (WSA 2021); 2021 Nov 10-12; French Riviera, France. [Berlin]: VDE Verlag; 2021. [5 p.].
• dc.identifier.doi http://dx.doi.org/10.48550/arXiv.2110.15768
• dc.identifier.uri http://hdl.handle.net/10230/55769
• dc.language.iso eng
• dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
• dc.relation.ispartof 25th International ITG Workshop on Smart Antennas (WSA 2021); 2021 Nov 10-12; French Riviera, France. [Berlin]: VDE Verlag; 2021. [5 p.].
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/101001331
• dc.rights © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. https://doi.org/10.48550/arXiv.2110.15768
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.subject.keyword beamfocusing
• dc.subject.keyword beam squint
• dc.subject.keyword intelligent reflecting surfaces
• dc.subject.keyword near-field
• dc.subject.keyword wideband THz communications
• dc.title Intelligent reflecting surface-aided wideband THz communications: modeling and analysis
• dc.type info:eu-repo/semantics/conferenceObject
• dc.type.version info:eu-repo/semantics/acceptedVersion