Heuristic Quantum Optimization for Engineering Reconfigurable Intelligent Surfaces in Smart Radio Environments
Qi Jian Lim, Zhen Peng, Gabriele Gradoni · 2023
Reconfigurable intelligent surfaces (RISs) are software-controlled large engineered surfaces with many low-cost passive reflecting elements, where the desired reflective wavefront may be achieved by tuning the local reflection phase and/or amplitude of individual elements.Recently, we have seen a growing interest in using RISs to dynamically manipulate the propagation environment.Going beyond 5G and entering 6G, it is envisioned that large-scale, distributed RIS devices will be deployed at the surface of interacting objects, e.g.walls, windows, and furniture, in the propagation channel.The overall goal is to transform the radio environment into a smart and reconfigurable space that provides enhanced coverage with high energy efficiency and supports ultra-fast and seamless connectivity.