Empirical Validation of the Impedance-Based RIS Channel Model in an Indoor Scattering Environment

Placido Mursia; Taghrid Mazloum; Frederic Munoz; Vincenzo Sciancalepore; Gabriele Gradoni; Raffaele D Errico; Marco Di Renzo; Xavier Costa-Perez; Antonio Clemente; Geoffroy Lerosey

arXiv · 2311.12628

Empirical Validation of the Impedance-Based RIS Channel Model in an Indoor Scattering Environment

Placido Mursia·Taghrid Mazloum·Frederic Munoz·Vincenzo Sciancalepore·Gabriele Gradoni·Raffaele D Errico·Marco Di Renzo·Xavier Costa-Perez·Antonio Clemente·Geoffroy Lerosey

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Abstract

Ensuring the precision of channel modeling plays a pivotal role in the development of wireless communication systems, and this requirement remains a persistent challenge within the realm of networks supported by Reconfigurable Intelligent Surfaces (RIS). Achieving a comprehensive and reliable understanding of channel behavior in RIS-aided networks is an ongoing and complex issue that demands further exploration. In this paper, we empirically validate a recently-proposed impedance-based RIS channel model that accounts for the mutual coupling at the antenna array and precisely models the presence of scattering objects within the environment as a discrete array of loaded dipoles. To this end, we exploit real-life channel measurements collected in an office environment to demonstrate the validity of such a model and its applicability in a practical scenario. Finally, we provide numerical results demonstrating that designing the RIS configuration based upon such model leads to superior performance as compared to reference schemes.

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Placido Mursia, Taghrid Mazloum, Frederic Munoz, Vincenzo Sciancalepore, Gabriele Gradoni, Raffaele D Errico, Marco Di Renzo, Xavier Costa-Perez, Antonio Clemente, Geoffroy Lerosey. 2023-12-01. Empirical Validation of the Impedance-Based RIS Channel Model in an Indoor Scattering Environment. https://arxiv.org/abs/2311.12628

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