301 citations · 989 across the 70 of their papers we have counts for
73 papers
Dual-Layer Over-the-Air Federated Learning in LEO Satellite Networks: Architecture, Key Technologies and Applications
Zhendong Li, Shaojie Wang, Zhou Su +4
Low Earth orbit (LEO) satellite networks are emerging as a pivotal infrastructure for global edge intelligence. In this context, integrating over-the-air (OTA) computation with ada…
Adaptive Beam Hopping and Power Control for Dual-Layer Over-the-Air Online Federated Learning in LEO Satellite Networks
Zhendong Li, Shaojie Wang, Zhou Su +5
This paper investigates over-the-air (OTA) computation enabled online federated learning (FL) in low-Earth orbit (LEO) satellite networks. Specifically, we consider a dual-layer OT…
Tensor-Based Dynamic Channel Estimation for mmWave Movable Antenna MIMO Systems
Zhendong Li, Linchu Chen, Lin Chen +5
This paper investigates the dynamic channel estimation algorithm in mmWave movable antenna (MA) multiple-input multiple-output (MIMO) systems. To achieve highly accurate channel es…
Sensing for Reliable UAV Communication: Robust Trajectory and Resource Optimization in Low-Altitude Networks
Yifan Jiang, Qingqing Wu, Hongxun Hui +3
In low-altitude wireless networks, sensing-aided communication has emerged as a promising integrated sensing and communication (ISAC) paradigm for unmanned aerial vehicle (UAV) tra…
Joint Transceiver Orientation Optimization for Rotatable-Antenna MIMO Capacity Maximization
Zheng Ailing, Wu Qingqing, Peng Xingxiang +3
Conventional multiple-input multiple-output (MIMO) systems mainly rely on fixed antenna arrays, which limits their capability to adapt the effective channel matrix to the propagati…
Engineering Favorable Propagation: Near-Field IRS Deployment for Spatial Multiplexing
Qingqing Wu, Yuxuan Chen, Guangji Chen +2
In intelligent reflecting surface IRS assisted multiple input multiple output MIMO systems, a strong line of sight LoS link is required to compensate for the severe cascaded path l…
Cooperative Rotatable IRSs for Wireless Communications: Joint Beamforming and Orientation Optimization
Qiaoyan Peng, Qingqing Wu, Guangji Chen +3
Rotatable intelligent reflecting surfaces (IRSs) introduce a new degree of freedom (DoF) for shaping wireless propagation by adaptively adjusting the orientation of IRSs. This pape…
Semi-Passive IRS Enabled Sensing with Group Movable Sensors
Qiaoyan Peng, Qingqing Wu, Wen Chen +4
The performance of the sensing system is limited by the signal attenuation and the number of receiving components. In this letter, we investigate the sensor position selection in a…
Intelligent Reflecting Surfaces for Integrated Sensing and Communications: From System Coexistence to Networked Mutualism
Qingqing Wu, Qiaoyan Peng, Ziheng Zhang +10
The rapid development of sixth-generation (6G) wireless networks requires seamless integration of communication and sensing to support ubiquitous intelligence and real-time, high-r…
Rotatable IRS Aided Wireless Communication
Qiaoyan Peng, Qingqing Wu, Guangji Chen +4
Rotatable intelligent reflecting surface (IRS) introduces a new spatial degree of freedom (DoF) by dynamically adjusting orientations without the need of changing its elements' pos…
Active IRS Assisted Joint Uplink and Downlink Communications
Qiaoyan Peng, Qingqing Wu, Guangji Chen +2
In this paper, we investigate an intelligent reflecting surface (IRS) aided wireless communication system, where active IRSs (AIRSs) are deployed to assist communication between a…
Rotatable Antenna Enabled Spectrum Sharing: Joint Antenna Orientation and Beamforming Design
Xingxiang Peng, Qingqing Wu, Ziyuan Zheng +3
Conventional antenna arrays rely primarily on digital beamforming for spatial control. While adding more elements can narrow beamwidth and suppress interference, such scaling incur…
Low-Altitude UAV Tracking via Sensing-Assisted Predictive Beamforming
Yifan Jiang, Qingqing Wu, Hongxun Hui +2
Sensing-assisted predictive beamforming shows significant promise for enhancing various future unmanned aerial vehicle (UAV) applications in integrated sensing and communication (I…
Multi-IRS Aided ISAC System: Multi-Path Exploitation Versus Reduction
Guangji Chen, Qingqing Wu, Shihang Lu +2
This paper investigates a multi-intelligent reflecting surface (IRS) aided integrated sensing and communication (ISAC) system, where multiple IRSs are strategically deployed not on…
Integrating Movable Antennas and Intelligent Reflecting Surfaces (MA-IRS): Fundamentals, Practical Solutions, and ISAC
Qingqing Wu, Ziyuan Zheng, Ying Gao +4
Movable antennas (MAs) and intelligent reflecting surfaces (IRSs) enable active antenna repositioning and passive phase-shift tuning for channel reconfiguration, respectively. Inte…
Joint Size and Placement Optimization for IRS-Aided Communications with Active and Passive Elements
Qiaoyan Peng, Qingqing Wu, Wen Chen +6
Different types of intelligent reflecting surfaces (IRS) are exploited for assisting wireless communications. The joint use of passive IRS (PIRS) and active IRS (AIRS) emerges as a…
Intelligent Reflecting Surfaces for Wireless Networks: Deployment Architectures, Key Solutions, and Field Trials
Qingqing Wu, Guangji Chen, Qiaoyan Peng +6
Intelligent reflecting surfaces (IRSs) have emerged as a transformative technology for wireless networks by improving coverage, capacity, and energy efficiency through intelligent…
Movable Intelligent Surface (MIS) for Wireless Communications: Architecture, Modeling, Algorithm, and Prototyping
Ziyuan Zheng, Qingqing Wu, Wen Chen +2
Reconfigurable intelligent surfaces enhance wireless systems by reshaping propagation environments. However, dynamic metasurfaces (MSs) with numerous phase-shift elements incur und…
Spatial Multiplexing Oriented Channel Reconfiguration in Multi-IRS Aided MIMO Systems
Yuxuan Chen, Qingqing Wu, Guangji Chen +1
Spatial multiplexing plays a significant role in improving the capacity of multiple-input multiple-output (MIMO) communication systems. To improve the spectral efficiency (SE) of a…
Beamforming Design for Intelligent Reffecting Surface Aided Near-Field THz Communications
Chi Qiu, Qingqing Wu, Wen Chen +4
Intelligent reflecting surface (IRS) operating in the terahertz (THz) band has recently gained considerable interest due to its high spectrum bandwidth. Due to the exploitation of…
Two-Timescale Design for Movable Antenna-Enabled Multiuser MIMO Systems
Ziyuan Zheng, Qingqing Wu, Wen Chen +1
Movable antennas (MAs), which can be swiftly repositioned within a defined region, offer a promising solution to the limitations of fixed-position antennas (FPAs) in adapting to sp…
Movable Antennas Enabled Wireless-Powered NOMA: Continuous and Discrete Positioning Designs
Ying Gao, Qingqing Wu, Wen Chen
This paper investigates a movable antenna (MA)-enabled wireless-powered communication network (WPCN), where multiple wireless devices (WDs) first harvest energy from the downlink (…
Energy-Aware UAV-Enabled Target Tracking: Online Optimization with Location Constraints
Yifan Jiang, Qingqing Wu, Wen Chen +1
For unmanned aerial vehicle (UAV) trajectory design, the total propulsion energy consumption and initial-final location constraints are practical factors to consider. However, unli…
Suppressing Beam Squint Effect For Near-Field Wideband Communication Through Movable Antennas
Yanze Zhu, Qingqing Wu, Yang Liu +2
In this correspondence, we study deploying movable antenna (MA) array in a wideband multiple-input-single-output (MISO) communication system, where near-field (NF) channel model is…