Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead.
Marco Di RenzoAlessio ZapponeMérouane DebbahMohamed-Slim AlouiniChau YuenJulien de RosnySergei A. TretyakovPublished in: IEEE J. Sel. Areas Commun. (2020)