792 citations · 3.8k across the 139 of their papers we have counts for
65 papers · 1 filter
Two-Timescale Design for Reconfigurable Intelligent Surface-Aided URLLC
Qihao Peng, Hong Ren, Cunhua Pan +3
In this paper, to tackle the blockage issue in massive multiple-input-multiple-output (mMIMO) systems, a reconfigurable intelligent surface (RIS) is seamlessly deployed to support…
On Performance of Fluid Antenna System using Maximum Ratio Combining
Xiazhi Lai, Tuo Wu, Junteng Yao +3
This letter investigates a fluid antenna system (FAS) where multiple ports can be activated for signal combining for enhanced receiver performance. Given ports at the FAS, the…
Energy Minimization for Active RIS-Aided UAV-Enabled SWIPT Systems
Zhangjie Peng, Ruijing Liu, Cunhua Pan +2
In this paper, we consider an active reconfigurable intelligent surface (RIS)-aided unmanned aerial vehicle(UAV)-enabled simultaneous wireless information and power transfer(SWIPT)…
Performance Analysis and Low-Complexity Design for XL-MIMO with Near-Field Spatial Non-Stationarities
Kangda Zhi, Cunhua Pan, Hong Ren +4
Extremely large-scale multiple-input multiple-output (XL-MIMO) is capable of supporting extremely high system capacities with large numbers of users. In this work, we build a frame…
Two-Timescale Design for RIS-aided Cell-free Massive MIMO Systems with Imperfect CSI
Mahdi Eskandari, Kangda Zhi, Huiling Zhu +2
The objective of this paper is to evaluate the effectiveness of a two-timescale transmission design in cell-free massive multi-input multiple-output (MIMO) systems incorporating re…
RIS-Position and Orientation Estimation in MIMO-OFDM Systems with Practical Scatterers
Sheng Hong, Cunhua Pan, Wenchao Tang +2
In this paper, we investigate the problem of estimating the position and the angle of rotation of a mobile station (MS) in a millimeter wave (mmWave) multiple-input-multiple-output…
Device Scheduling for Over-the-Air Federated Learning with Differential Privacy
Na Yan, Kezhi Wang, Cunhua Pan +1
In this paper, we propose a device scheduling scheme for differentially private over-the-air federated learning (DP-OTA-FL) systems, referred to as S-DPOTAFL, where the privacy of…
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-Timescale Transmission Design for Wireless Communication Systems Aided by Active RIS
Zhangjie Peng, Tianshu Li, Cunhua Pan +2
This paper considers an active reconfigurable intelligent surface (RIS)-aided communication system, where an M-antenna base station (BS) transmits data symbols to a single-antenna…
Fingerprint Based mmWave Positioning System Aided by Reconfigurable Intelligent Surface
Tuo Wu, Cunhua Pan, Yijin Pan +3
Reconfigurable intelligent surface (RIS) is a promising technique for millimeter wave (mmWave) positioning systems. In this paper, we consider multiple mobile users (MUs) positioni…
Toward Secure and Private Over-the-Air Federated Learning
Na Yan, Kezhi Wang, Kangda Zhi +3
In this paper, a novel secure and private over-the-air federated learning (SP-OTA-FL) framework is studied where noise is employed to protect data privacy and system security. Spec…
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…
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…
Error Propagation and Overhead Reduced Channel Estimation for RIS-Aided Multi-User mmWave Systems
Zhendong Peng, Cunhua Pan, Gui Zhou +1
In this paper, we propose a novel two-stage based uplink channel estimation strategy with reduced pilot overhead and error propagation for a reconfigurable intelligent surface (RIS…
Energy Minimization in RIS-Assisted UAV-Enabled Wireless Power Transfer Systems
Hong Ren, Zhenkun Zhang, Zhangjie Peng +2
Unmanned aerial vehicle (UAV)-enabled wireless power transfer (WPT) systems offer significant advantages in coverage and deployment flexibility, but suffer from endurance limitatio…
RIS-Aided Near-Field Localization and Channel Estimation for the Sub-Terahertz System
Yijin Pan, Cunhua Pan, Shi Jin +1
The low hardware cost makes ultra-large (XL) reconfigurable intelligent surface (RIS) an attractive solution for the performance enhancement of localization and communication syste…
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…
Channel Estimation for RIS-Aided Multi-User mmWave Systems with Uniform Planar Arrays
Zhendong Peng, Gui Zhou, Cunhua Pan +4
In this paper, we adopt a three-stage based uplink channel estimation protocol with reduced pilot overhead for an reconfigurable intelligent surface (RIS)-aided multi-user (MU) mil…
An Overview of Signal Processing Techniques for RIS/IRS-aided Wireless Systems
Cunhua Pan, Gui Zhou, Kangda Zhi +8
In the past as well as present wireless communication systems, the wireless propagation environment is regarded as an uncontrollable black box that impairs the received signal qual…
Active RIS Versus Passive RIS: Which Is Superior with the Same Power Budget?
Kangda Zhi, Cunhua Pan, Hong Ren +2
This letter theoretically compares the active reconfigurable intelligent surface (RIS)-aided system with the passive RIS-aided system. For fair comparison, we consider that these t…
RIS-Aided D2D Communications Relying on Statistical CSI with Imperfect Hardware
Zhangjie Peng, Tianshu Li, Cunhua Pan +2
In this letter, we investigate a reconfigurable intelligent surfaces (RIS)-aided device to device (D2D) communication system over Rician fading channels with imperfect hardware inc…
Optimization of RIS Configurations for Multiple-RIS-Aided mmWave Positioning Systems based on CRLB Analysis
Yu Liu, Sheng Hong, Cunhua Pan +3
Reconfigurable intelligent surface (RIS) is a promising technology for future millimeter-wave (mmWave) communication systems. However, its potential benefits of adopting RIS for hi…
Blocking Probability in Obstructed Tunnels with Reconfigurable Intelligent Surface
Changshan Chen, Cunhua Pan
In the obstructed tunnels, the signal transmission will suffer the risk of ray-path blocking caused by the obstacles owing to the Snell's law. In this letter, the reconfigurable in…