6 papers
A Tutorial on Beyond-Diagonal Reconfigurable Intelligent Surfaces: Modeling, Architectures, System Design and Optimization, and Applications
Hongyu Li, Matteo Nerini, Shanpu Shen +1
Written by its inventors, this first tutorial on Beyond-Diagonal Reconfigurable Intelligent Surfaces (BD-RISs) provides the readers with the basics and fundamental tools necessary…
Lossy Beyond Diagonal Reconfigurable Intelligent Surfaces: Modeling and Optimization
Yiyang Peng, Hongyu Li, Zheyu Wu +1
Beyond diagonal reconfigurable intelligent surface (BD-RIS) has emerged as an advancement and generalization of the conventional diagonal RIS (D-RIS) by introducing tunable interco…
A Decoupled Channel Estimation Method for Beyond Diagonal RIS
Bruno Sokal, Fazal-E-Asim, André L. F. de Almeida +2
Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a new architecture for RIS where elements are interconnected to provide more wave manipulation flexibility than tradi…
Non-reciprocal Beyond Diagonal RIS: Sum-Rate Maximization in Full-Duplex Communications
Ziang Liu, Hongyu Li, Bruno Clerckx
Reconfigurable intelligent surface (RIS) has been envisioned as a key technology in future wireless communication networks to enable smart radio environment. To further enhance the…
Global Optimal Closed-Form Solutions for Intelligent Surfaces With Mutual Coupling: Is Mutual Coupling Detrimental or Beneficial?
Matteo Nerini, Hongyu Li, Bruno Clerckx
Reconfigurable Intelligent Surface (RIS) is a breakthrough technology enabling the dynamic control of the propagation environment in wireless communications through programmable su…
Non-Reciprocal Beyond Diagonal RIS: Multiport Network Models and Performance Benefits in Full-Duplex Systems
Hongyu Li, Bruno Clerckx
Beyond diagonal reconfigurable intelligent surfaces (BD-RIS) is a new advance in RIS techniques that introduces reconfigurable inter-element connections to generate scattering matr…