5 citations · 22 across the 43 of their papers we have counts for
18 papers · 1 filter
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…
Dual-Polarized Beyond Diagonal RIS
Matteo Nerini, Bruno Clerckx
Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a family of RIS architectures more flexible than conventional RIS. While BD-RIS has been primarily analyzed assuming…
Optimization of Beyond Diagonal RIS: A Universal Framework Applicable to Arbitrary Architectures
Zheyu Wu, Bruno Clerckx
Reconfigurable intelligent surfaces (RISs) are envisioned as a promising technology for future wireless communication systems due to their ability to control the propagation enviro…
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…
Physics-Compliant Modeling and Scaling Laws of Multi-RIS Aided MIMO Systems
Matteo Nerini, Gabriele Gradoni, Bruno Clerckx
Reconfigurable intelligent surface (RIS) enables the control of wireless channels to improve coverage. To further extend coverage, multi-RIS aided systems have been explored, where…
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…
Physics-Compliant Modeling and Scaling Laws of Multi-RIS Aided Systems
Matteo Nerini, Gabriele Gradoni, Bruno Clerckx
Reconfigurable intelligent surface (RIS) is a revolutionary technology enabling the control of wireless channels and improving coverage in wireless networks. To further extend cove…
Beyond Diagonal RIS: Passive Maximum Ratio Transmission and Interference Nulling Enabler
Hamad Yahya, Hongyu Li, Matteo Nerini +2
Beyond diagonal reconfigurable intelligent surfaces (BD-RIS) generalizes and goes beyond conventional diagonal reconfigurable intelligent surfaces (D-RIS) by interconnecting elemen…
Channel Estimation for Beyond Diagonal RIS via Tensor Decomposition
André L. F. de Almeida, Bruno Sokal, Hongyu Li +1
This paper addresses the channel estimation problem for beyond diagonal reconfigurable intelligent surface (BD-RIS) from a tensor decomposition perspective. We first show that the…
MIMO Channel Shaping and Rate Maximization Using Beyond-Diagonal RIS
Yang Zhao, Hongyu Li, Bruno Clerckx +1
This paper investigates the limits to which a passive Reconfigurable Intelligent Surface (RIS) can reshape a point-to-point Multiple-Input Multiple-Output (MIMO) channel in terms o…
Full-Space Wireless Sensing Enabled by Multi-Sector Intelligent Surfaces
Yumeng Zhang, Xiaodan Shao, Hongyu Li +2
The multi-sector intelligent surface (IS), benefiting from a smarter wave manipulation capability, has been shown to enhance channel gain and offer full-space coverage in communica…
Beyond Diagonal Reconfigurable Intelligent Surfaces in Wideband OFDM Communications: Circuit-Based Modeling and Optimization
Hongyu Li, Matteo Nerini, Shanpu Shen +1
This work investigates the modeling and optimization of beyond diagonal reconfigurable intelligent surface (BD-RIS), which generalizes conventional RIS with diagonal phase shift ma…
Wideband Modeling and Beamforming for Beyond Diagonal Reconfigurable Intelligent Surfaces
Hongyu Li, Matteo Nerini, Shanpu Shen +1
This work studies the wideband modeling and beamforming design of beyond diagonal reconfigurable intelligent surface (BD-RIS), which generalizes and goes beyond conventional RIS wi…
Channel Estimation and Beamforming for Beyond Diagonal Reconfigurable Intelligent Surfaces
Hongyu Li, Shanpu Shen, Yumeng Zhang +1
Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a new advance and generalization of the RIS technique. BD-RIS breaks through the isolation between RIS elements by cr…
Static Grouping Strategy Design for Beyond Diagonal Reconfigurable Intelligent Surfaces
Matteo Nerini, Shanpu Shen, Bruno Clerckx
Beyond diagonal reconfigurable intelligent surface (BD-RIS) extends conventional RIS through novel architectures, such as group-connected RIS, with scattering matrix not restricted…
Physically Consistent Modeling of Stacked Intelligent Metasurfaces Implemented with Beyond Diagonal RIS
Matteo Nerini, Bruno Clerckx
Stacked intelligent metasurface (SIM) has emerged as a technology enabling wave domain beamforming through multiple stacked reconfigurable intelligent surfaces (RISs). SIM has been…
Localized and Distributed Beyond Diagonal Reconfigurable Intelligent Surfaces with Lossy Interconnections: Modeling and Optimization
Matteo Nerini, Golsa Ghiaasi, Bruno Clerckx
Reconfigurable intelligent surface (RIS) is a key technology to control the communication environment in future wireless networks. Recently, beyond diagonal RIS (BD-RIS) emerged as…