256 citations · 472 across the 30 of their papers we have counts for
21 papers · 1 filter
Optimizing Antenna Coding for Pixel Antenna Empowered SISO-OFDM Systems
Tianrui Qiao, Shanpu Shen, Yijun Chen +1
This work investigates antenna coding optimization to enhance the channel capacity of single-input single-output orthogonal frequency division multiplexing (SISO-OFDM) systems empo…
Overcoming BS Down-Tilt for Air-Ground ISAC Coverage: Antenna Design, Beamforming and User Scheduling
Lingyi Zhu, Zhongxiang Wei, Fan Liu +4
Integrated sensing and communication holds great promise for low-altitude economy applications. However, conventional downtilted base stations primarily provide sectorized forward…
Antenna Coding Design for Multi-User Transmissions Using Pixel Antennas
Hongyu Li, Shanpu Shen
This work investigates exploiting the potential of pixel antennas, which are a reconfigurable antenna technology that can flexibly adjust the antenna characteristics through antenn…
Exploiting Spatial Multiplexing Based on Pixel Antennas: An Antenna Coding Approach
Zixiang Han, Shanpu Shen, Ross Murch
An antenna coding approach for exploiting the spatial multiplexing capability of pixel antennas is proposed. This approach can leverage additional degrees of freedom in the beamspa…
A Hybrid Transmitting and Reflecting Beyond Diagonal Reconfigurable Intelligent Surface with Independent Beam Control and Power Splitting
Zhaoyang Ming, Shanpu Shen, Junhui Rao +4
A hybrid transmitting and reflecting beyond diagonal reconfigurable intelligent surface (BD-RIS) design is proposed. Operating in the same aperture, frequency band and polarization…
Antenna Coding Empowered by Pixel Antennas
Shanpu Shen, Kai-Kit Wong, Ross Murch
Pixel antennas, based on discretizing a continuous radiation surface into small elements called pixels, are a flexible reconfigurable antenna technology. By controlling the connect…
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…
Reconfigurable Intelligent Surfaces 2.0: Beyond Diagonal Phase Shift Matrices
Hongyu Li, Shanpu Shen, Matteo Nerini +1
Reconfigurable intelligent surface (RIS) has been envisioned as a promising technique to enable and enhance future wireless communications due to its potential to engineer the wire…
A Dual-Function Radar-Communication System Empowered by Beyond Diagonal Reconfigurable Intelligent Surface
Bowen Wang, Hongyu Li, Shanpu Shen +2
This work focuses on the use of reconfigurable intelligent surface (RIS) in dual-function radar-communication (DFRC) systems to improve communication capacity and sensing precision…
An Efficient Ratio Detector for Ambient Backscatter Communication
Wenjing Liu, Shanpu Shen, Danny H. K. Tsang +2
Ambient backscatter communication (AmBC) leverages the existing ambient radio frequency (RF) environment to implement communication with battery-free devices. One critical challeng…
A Dynamic Grouping Strategy for Beyond Diagonal Reconfigurable Intelligent Surfaces with Hybrid Transmitting and Reflecting Mode
Hongyu Li, Shanpu Shen, Bruno Clerckx
Beyond diagonal reconfigurable intelligent surface (BD-RIS) is a novel branch of RIS which breaks through the limitation of traditional RIS with diagonal scattering matrices. Howev…
Beyond Diagonal Reconfigurable Intelligent Surfaces: A Multi-Sector Mode Enabling Highly Directional Full-Space Wireless Coverage
Hongyu Li, Shanpu Shen, Bruno Clerckx
Reconfigurable intelligent surface (RIS) has gained much traction due to its potential to manipulate the propagation environment via nearly-passive reconfigurable elements. In our…
Using Loaded N-port Structures to Achieve the Continuous-Space Electromagnetic Channel Capacity Bound
Zixiang Han, Shanpu Shen, Yujie Zhang +3
A method for achieving the continuous-space electromagnetic channel capacity bound using loaded N-port structures is described. It is relevant for the design of compact multiple-in…
Closed-Loop Wireless Power Transfer with Adaptive Waveform and Beamforming: Design, Prototype, and Experiment
Shanpu Shen, Junghoon Kim, Bruno Clerckx
In this paper, we design, prototype, and experiment a closed-loop radiative wireless power transfer (WPT) system with adaptive waveform and beamforming using limited feedback. Spat…
Modeling and Architecture Design of Reconfigurable Intelligent Surfaces Using Scattering Parameter Network Analysis
Shanpu Shen, Bruno Clerckx, Ross Murch
Reconfigurable intelligent surfaces (RISs) are an emerging technology for future wireless communication. The vast majority of recent research on RIS has focused on system level opt…
Wireless Power Transfer with Distributed Antennas: System Design, Prototype, and Experiments
Shanpu Shen, Junghoon Kim, Chaoyun Song +1
In this paper, we design and experiment a far-field wireless power transfer (WPT) architecture based on distributed antennas, so-called WPT DAS, that dynamically selects transmit a…
Beamforming Optimization for MIMO Wireless Power Transfer with Nonlinear Energy Harvesting: RF Combining versus DC Combining
Shanpu Shen, Bruno Clerckx
In this paper, we study the multiple-input and multiple-output (MIMO) wireless power transfer (WPT) system so as to enhance the output DC power of the rectennas. To that end, we re…
Joint Waveform and Beamforming Optimization for MIMO Wireless Power Transfer
Shanpu Shen, Bruno Clerckx
In this paper, we study a multi-sine multiple-input multiple-output (MIMO) wireless power transfer (WPT) system with the objective to increase the output DC power. We jointly optim…
Enhancing Ambient Backscatter Communication Utilizing Coherent and Non-Coherent Space-Time Codes
Wenjing Liu, Shanpu Shen, Danny H. K. Tsang +1
Ambient backscatter communication (AmBC) leverages the existing ambient radio frequency (RF) environment to implement communication with battery-free devices. The key challenge in…