Intelligent Reflecting Surfaces: Physics, Propagation, and Pathloss Modeling

2019/10/07 by Özgecan Özdogan, Özgecan Özdoğan, Özdogan, Özgecan +4 · 18 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Advanced Wireless Communication Technologies #Applied Physics (physics.app-ph) #Computational Physics (physics.comp-ph) #FOS: Electrical engineering #FOS: Physical sciences #Metamaterials and Metasurfaces Applications #Signal Processing (eess.SP) #eess.SP #electronic engineering #information engineering #physics.app-ph #physics.comp-ph

paper · pdf · doi:10.48550/arxiv.1911.03359

To appear at IEEE Wireless Communications Letters, 5 pages, 5 figures

openalex publication_date 2019/10/07 · arxiv created 2019/12/16 · arxiv updated 2019/12/17 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28

Abstract

Intelligent reflecting surfaces can improve the communication between a source and a destination. The surface contains metamaterial that is configured to "reflect" the incident wave from the source towards the destination. Two incompatible pathloss models have been used in prior work. In this letter, we derive the far-field pathloss using physical optics techniques and explain why the surface consists of many elements that individually act as diffuse scatterers but can jointly beamform the signal in a desired direction with a certain beamwidth. We disprove one of the previously conjectured pathloss models.

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