71 citations · 121 across the 40 of their papers we have counts for
40 papers
Radio-Frequency Inverse Rendering for Wireless Environment Modeling
Fuhai Wang, Zihan Jin, Lehang Wang +4
Neural rendering paradigms have recently emerged as powerful tools for radio frequency (RF). However, by entangling RF sources with scene geometry and material properties, existing…
Source Localization and Power Estimation through RISs: Performance Analysis and Prototype Validations
Fuhai Wang, Tiebin Mi, Chun Wang +3
This paper investigates the capabilities and effectiveness of backward localization centered on reconfigurable intelligent surfaces (RISs). In the backward sensing paradigm, the re…
Metasurface-Enabled Superheterodyne Transmitter With Decoupled Harmonic-Free Signal Generation and Precoding
Xuehui Dong, Miyu Feng, Chen Shao +6
The evolution of programmable metasurfaces (PM) from passive beamforming to active information transmission marks a paradigm shift for next-generation wireless systems. However, th…
Metasurface-Enabled Extremely Large-Scale Antenna Systems: Transceiver Architecture, Physical Modeling, and Channel Estimation
Zhengyu Wang, Tiebin Mi, Gui Zhou +1
Extremely large-scale antenna arrays (ELAAs) have emerged as a pivotal technology for addressing the unprecedented performance demands of next-generation wireless communication sys…
WiCAL: Accurate Wi-Fi-Based 3D Localization Enabled by Collaborative Antenna Arrays
Fuhai Wang, Zhe Li, Rujing Xiong +2
Accurate 3D localization is essential for realizing advanced sensing functionalities in next-generation Wi-Fi communication systems. This study investigates the potential of multis…
Swarm Antenna Arrays: From Deterministic to Stochastic Modeling
Tiebin Mi, Miyu Feng, Ruichu Shao +2
Swarm antenna arrays, composed of spatially distributed antennas mounted on unmanned agents, offer unprecedented flexibility and adaptability for wireless sensing and communication…
Flexible Multi-Beam Synthesis and Directional Suppression Through Transmissive RIS
Rujing Xiong, Ke Yin, Jialong Lu +3
Despite extensive research on reconfigurable intelligent surfaces (RISs) in recent years, existing beamforming methods still face significant challenges in achieving flexible and r…
Metasurface-Enabled Superheterodyne Transmitter for Arbitrary-Order Modulation with Spatially Isotropic Symbol Distribution
Xuehui Dong, Miyu Feng, Chen Shao +5
Electromagnetically programmable information metasurfaces, as dynamically controllable 2D metamaterials, hold significant promise as low-profile hardware enabling passive wave cont…
TRIS-HAR: Transmissive Reconfigurable Intelligent Surfaces-assisted Cognitive Wireless Human Activity Recognition Using State Space Models
Junshuo Liu, Yunlong Huang, Xin Shi +4
Human activity recognition (HAR) using radio frequency (RF) signals has garnered considerable attention for its applications in smart environments. However, traditional systems oft…
TRGR: Transmissive RIS-aided Gait Recognition Through Walls
Yunlong Huang, Junshuo Liu, Jianan Zhang +3
Gait recognition with radio frequency (RF) signals enables many potential applications requiring accurate identification. However, current systems require individuals to be within…
Toward Wireless Localization Using Multiple Reconfigurable Intelligent Surfaces
Fuhai Wang, Tiebin Mi, Chun Wang +3
This paper investigates the capabilities and effectiveness of backward sensing centered on reconfigurable intelligent surfaces (RISs). We demonstrate that the direction of arrival…
Dreamer: Dual-RIS-aided Imager in Complementary Modes
Fuhai Wang, Yunlong Huang, Zhanbo Feng +6
Reconfigurable intelligent surfaces (RISs) have emerged as a promising auxiliary technology for radio frequency imaging. However, existing works face challenges of faint and intric…
Design and Optimization on Successive RIS-assisted Multi-hop Wireless Communications
Rujing Xiong, Jialong Lu, Jianan Zhang +4
As an emerging wireless communication technology, reconfigurable intelligent surface (RIS) has become a basic choice for providing signal coverage services in scenarios with dense…
Arbitrary Waveform Generated Metasurface: A New Paradigm for Direct Modulation and Beamforming Decoupling
Xuehui Dong, Bokai Lai, Rujing Xiong +4
Information Metasurface, also known as reconfigurable intelligent surface (RIS) has gained significant attention owing to its impressive abilities in electromagnetic (EM) wave mani…
Optimal Beamforming of RIS-Aided Wireless Communications: An Alternating Inner Product Maximization Approach
Rujing Xiong, Tiebin Mi, Jialong Lu +4
This paper investigates a general discrete -norm maximization problem, with the power enhancement at steering directions through reconfigurable intelligent surfaces (RISs)…
Optimal Configuration of Reconfigurable Intelligent Surfaces With Non-uniform Phase Quantization
Jialong Lu, Rujing Xiong, Tiebin Mi +2
The existing methods for reconfigurable intelligent surface (RIS) beamforming in wireless communications are typically limited to uniform phase quantization. However, in practical…
RISAR: RIS-assisted Human Activity Recognition with Commercial Wi-Fi Devices
Junshuo Liu, Yunlong Huang, Wei Yang +5
Human activity recognition (HAR) holds significant importance in smart homes, security, and healthcare. Existing systems face limitations because of the insufficient spatial divers…
Design and Prototyping of Transmissive RIS-Aided Wireless Communication
Jianan Zhang, Rujing Xiong, Junshuo Liu +2
Reconfigurable Intelligent Surfaces (RISs) exhibit promising enhancements in coverage and data rates for wireless communication systems, particularly in the context of 5G and beyon…
Wireless Regional Imaging through Reconfigurable Intelligent Surfaces: Passive Mode
Fuhai Wang, Chun Wang, Rujing Xiong +3
In this paper, we propose a multi-RIS-aided wireless imaging framework in 3D facing the distributed placement of multi-sensor networks. The system creates a randomized reflection p…
Wireless Communications in Cavity: A Reconfigurable Boundary Modulation based Approach
Xuehui Dong, Xiang Ren, Bokai Lai +3
This paper explores the potential wireless communication applications of Reconfigurable Intelligent Surfaces (RIS) in reverberant wave propagation environments. Unlike in free spac…
The Capacity Region of Information Theoretic Secure Aggregation with Uncoded Groupwise Keys
Kai Wan, Hua Sun, Mingyue Ji +2
This paper considers the secure aggregation problem for federated learning under an information theoretic cryptographic formulation, where distributed training nodes (referred to a…
A Wi-Fi Signal-Based Human Activity Recognition Using High-Dimensional Factor Models
Junshuo Liu, Fuhai Wang, Zhe Li +3
Passive sensing techniques based on Wi-Fi signals have emerged as a promising technology in advanced wireless communication systems due to their widespread application and cost-eff…
Robust and Communication-Efficient Federated Domain Adaptation via Random Features
Zhanbo Feng, Yuanjie Wang, Jie Li +5
Modern machine learning (ML) models have grown to a scale where training them on a single machine becomes impractical. As a result, there is a growing trend to leverage federated l…
RIS-aided Real-time Beam Tracking for a Mobile User via Bayesian Optimization
Junshuo Liu, Rujing Xiong, Jialong Lu +2
The conventional beam management procedure mandates that the user equipment (UE) periodically measure the received signal reference power (RSRP) and transmit these measurements to…