End-to-End Fading Channel Modeling for RIS-Empowered Smart Wireless Environments

Rashid Faqiri, Chloé Saigre-Tardif, George C. Alexandropoulos, Nir Shlezinger, Mohammadreza F. Imani, Philipp del Hougne

Research output: Contribution to conferencePaperpeer-review


The combination of reconfigurable intelligent surfaces (RISs) and extremely massive antenna arrays is lately gaining increased attention as a new wireless networking paradigm, offering programmable radio wave propagation and holographic communications. However, the channel models used to date for the design and analysis of RIS-empowered multiple-input and multiple-output (MIMO) communication systems include fading in a manner that is unfaithful to the underlying wave physics. In this paper, we introduce a physics-based end-to-end model of RIS-parametrized MIMO channels of arbitrary dimensions with adjustable fading (named PhysFad), which is based on a first-principles coupled-dipole formalism. PhysFad naturally incorporates the notions of space, causality, frequency selectivity, and the intertwinement of phase and amplitude response of each RIS and antenna element, as well as any arising mutual coupling effects including long-range mesoscopic correlations. The presented channel model, whose code is shared openly, is used to implement Ricean fading conditions with various K factors in a physics-compliant manner.

Original languageEnglish
Number of pages6
StatePublished - 12 Jan 2023
Event2022 IEEE GLOBECOM Workshops, GC Wkshps 2022 - Virtual, Online, Brazil
Duration: 4 Dec 20228 Dec 2022


Conference2022 IEEE GLOBECOM Workshops, GC Wkshps 2022
CityVirtual, Online


  • Fading Channel Modeling
  • Holographic MIMO
  • Reconfigurable Intelligent Surfaces
  • Ricean Distribution

ASJC Scopus subject areas

  • Instrumentation
  • Computer Networks and Communications
  • Control and Optimization


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