367 citations · 1.5k across the 122 of their papers we have counts for
29 papers · 1 filter
Enhanced-rate Iterative Beamformers for Active IRS-assisted Wireless Communications
Yeqing Lin, Feng Shu, Rongen Dong +5
Compared to passive intelligent reflecting surface (IRS), active IRS is viewed as a more efficient promising technique to combat the double-fading impact in IRS-aided wireless netw…
Three High-rate Beamforming Methods for Active IRS-aided Wireless Network
Feng Shu, Jing liu, Yeqing Lin +5
Due to its ability of breaking the double-fading effect experienced by passive intelligent reflecting surface (IRS), active IRS is evolving a potential technique for future 6G wire…
Low-overhead Beam Training Scheme for Extremely Large-Scale RIS in Near-field
Wang Liu, Cunhua Pan, Hong Ren +3
Extremely large-scale reconfigurable intelligent surface (XL-RIS) has recently been proposed and is recognized as a promising technology that can further enhance the capacity of co…
Channel Tracking for RIS-aided mmWave Communications Under High Mobility Scenarios
Yu Liu, Ming Chen, Cunhua Pan +5
The emerging reconfigurable intelligent surface (RIS) technology is promising for applications in the millimeter wave (mmWave) communication systems to effectively compensate for p…
Two Low-complexity Efficient Beamformers for IRS-and-UAV-aided Directional Modulation Networks
Yeqing Lin, Feng Shu, Yuxiang Zheng +5
As the excellent tools for aiding communication,intelligent reflecting surface (IRS) and unmanned aerial vehicle (UAV) can extend the coverage area, remove blind area, and achieve…
Asynchronous RIS-assisted Localization: A Comprehensive Analysis of Fundamental Limits
Ziyi Gong, Liang Wu, Zaichen Zhang +3
The reconfigurable intelligent surface (RIS) has drawn considerable attention for its ability to enhance the performance of not only the wireless communication but also the indoor…
Two-Timescale Transmission Design for RIS-Aided Cell-Free Massive MIMO Systems
Jianxin Dai, Jin Ge, Kangda Zhi +4
This paper investigates the performance of a two-timescale transmission design for uplink reconfigurable intelligent surface (RIS)-aided cell-free massive multiple-input multiple-o…
Enhanced Secure Wireless Transmission Using IRS-aided Directional Modulation
Yeqing Lin, Rongen Dong, Peng Zhang +2
As an excellent aided communication tool, intelligent reflecting surface (IRS) can make a significant rate enhancement and coverage extension. In this paper, we present an investig…
Deep Learning Based Beam Training for Extremely Large-Scale Massive MIMO in Near-Field Domain
Wang Liu, Hong Ren, Cunhua Pan +1
Extremely large-scale massive multiple-input-multiple-output (XL-MIMO) is regarded as a promising technology for next-generation communication systems. In order to enhance the beam…
Deep Learning Based DOA Estimation for Hybrid Massive MIMO Receive Array with Overlapped Subarrays
Yifan Li, Baihua Shi, Feng Shu +2
To improve the accuracy of direction-of-arrival (DOA) estimation, a deep learning (DL)-based method called CDAE-DNN is proposed for hybrid analog and digital (HAD) massive MIMO rec…
Active Reconfigurable Intelligent Surface for Mobile Edge Computing
Zhangjie Peng, Ruisong Weng, Zhenkun Zhang +2
This paper investigates an active reconfigurable intelligent surface (RIS)-aided mobile edge computing (MEC) system. Compared with passive RIS, the active RIS is equipped with acti…
Statistical CSI-based Beamforming for RIS-Aided Multiuser MISO Systems using Deep Reinforcement Learning
Mahdi Eskandari, Huiling Zhu, Arman Shojaeifard +1
The paper presents a joint beamforming algorithm using statistical channel state information (S-CSI) for reconfigurable intelligent surfaces (RIS) for multiuser MISO wireless commu…
Experimental Performance Evaluation of Cell-free Massive MIMO Systems Using COTS RRU with OTA Reciprocity Calibration and Phase Synchronization
Yang Cao, Pan Wang, Kang Zheng +9
Downlink coherent multiuser transmission is an essential technique for cell-free massive multiple-input multiple output (MIMO) systems, and the availability of channel state inform…
Performance Analysis and Optimization for RIS-Assisted Multi-User Massive MIMO Systems with Imperfect Hardware
Zhangjie Peng, Xianzhe Chen, Cunhua Pan +2
The paper studies a reconfigurable intelligent surface (RIS)-assisted multi-user uplink massive multiple-input multiple-output (MIMO) system with imperfect hardware. At the RIS, th…
Multi-Pair D2D Communications Aided by An Active RIS over Spatially Correlated Channels with Phase Noise
Zhangjie Peng, Xue Liu, Cunhua Pan +2
This paper investigates a multi-pair device-to-device (D2D) communication system aided by an active reconfigurable intelligent surface (RIS) with phase noise and direct link. The a…
Deep Reinforcement Learning for RIS-aided Multiuser Full-Duplex Secure Communications with Hardware Impairments
Zhangjie Peng, Zhibo Zhang, Lei Kong +3
In this paper, we investigate a reconfigurable intelligent surface (RIS)-aided multiuser full-duplex secure communication system with hardware impairments at transceivers and RIS,…
Mobility-Aware Cooperative Caching in Vehicular Edge Computing Based on Asynchronous Federated and Deep Reinforcement Learning
Qiong Wu, Yu Zhao, Qiang Fan +3
The vehicular edge computing (VEC) can cache contents in different RSUs at the network edge to support the real-time vehicular applications. In VEC, owing to the high-mobility char…
RIS-Aided Localization Algorithm and Analysis: Tackling Non-Gaussian Angle Estimation Errors
Tuo Wu, Hong Ren, Cunhua Pan +5
Reconfigurable intelligent surface (RIS)-aided localization systems are increasingly recognized for enhancing accuracy in internet of things (IoT) networks. However, prevailing stu…
Joint Angle Estimation Error Analysis and 3D Positioning Algorithm Design for mmWave Positioning System
Tuo Wu, Cunhua Pan, Yijin Pan +5
In this paper, we propose a comprehensive framework to jointly analyze the angle estimation error and design the three-dimensional (3D) positioning algorithm for a millimeter wave…
Optimal Measurement of Drone Swarm in RSS-based Passive Localization with Region Constraints
Xin Cheng, Feng Shu, Yifan Li +3
Passive geolocation by multiple unmanned aerial vehicles (UAVs) covers a wide range of military and civilian applications including rescue, wild life tracking and electronic warfar…
Low-complexity Joint Phase Adjustment and Receive Beamforming for Directional Modulation Networks via IRS
Rongen Dong, Shaohua Jiang, Xinhai Hua +3
Intelligent reflecting surface (IRS) is a revolutionary and low-cost technology for boosting the spectrum and energy efficiencies in future wireless communication network. In order…
Providing Location Information at Edge Networks: A Federated Learning-Based Approach
Xin Cheng, Tingting Liu, Feng Shu +3
Recently, the development of mobile edge computing has enabled exhilarating edge artificial intelligence (AI) with fast response and low communication cost. The location informatio…
Performance Analysis of Wireless Network Aided by Discrete-Phase-Shifter IRS
Rongen Dong, Yin Teng, Zhongwen Sun +5
Discrete phase shifters of intelligent reflecting surface (IRS) generates phase quantization error (QE) and degrades the receive performance at the receiver. To make an analysis of…
Two Low-complexity DOA Estimators for Massive/Ultra-massive MIMO Receive Array
Yiwen Chen, Xichao Zhan, Feng Shu +4
Eigen-decomposition-based direction finding methods of using large-scale/ultra-large-scale fully-digital receive antenna arrays lead to a high or ultra-high complexity. To address…