5 citations · 9 across the 18 of their papers we have counts for
15 papers · 1 filter
Antenna Coding Design for Pixel Antenna Empowered Rate-Splitting Multiple Access
Haobo Huang, Yijie Mao, Hongyu Li +1
This work explores the integration of pixel antennas and rate-splitting multiple access (RSMA) to enhance spectral efficiency in multi-user multiple-input single-output (MU-MISO) s…
Sparse Channel Estimation for Pixel Antennas: Addressing the Pilot Rank Deficiency
Yiting Chen, Yumeng Zhang, Hongyu Li
Composed of multiple interconnected pixels controlled by on/off RF switches, the pixel antenna can generate reconfigurable radiation patterns that can be further exploited to const…
Active Beyond-Diagonal Reconfigurable Intelligent Surfaces: Modeling, Architecture Design, and Optimization
Shanpu Shen, Hongyu Li, Matteo Nerini +2
Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) are an emerging RIS 2.0 technology for future wireless communication. However, BD-RISs are primarily passive without a…
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…
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…
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…
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…
Beyond Diagonal Reconfigurable Intelligent Surfaces with Mutual Coupling: Modeling and Optimization
Hongyu Li, Shanpu Shen, Matteo Nerini +2
This work studies the modeling and optimization of beyond diagonal reconfigurable intelligent surface (BD-RIS) aided wireless communication systems in the presence of mutual coupli…