Simple Link-Budget Estimation Formulas for Channels Including Anomalous Reflectors
Reconfigurable intelligent surfaces (RIS) are a promising tool for optimization of propagation channels for advanced wireless communication systems. These tools are especially relevant for high-frequency (millimeter-band) links where directive antennas are used. RIS panels act as high-gain passive repeaters, whose reflected waves interfere with the waves reflected from the illuminated spots at supporting walls, creating a complex field pattern in the far zone. In this work, we develop a simple link-budget model for non-line-of-sight channels via reflections from a finite size metasurface designed as a perfect anomalous reflector. The developed model takes into account diffraction at the RIS panel edges as well as interference with reflections from supporting structures. We take into account realistic losses and confirm the validity of results by numerical simulations.
European Commission through the H2020 ARIADNE project under grant 871464
Email Address of Submitting Authorsergei.email@example.com
ORCID of Submitting Author0000-0003-0160-1812
Submitting Author's InstitutionAalto University
Submitting Author's Country