444 citations · 1.2k across the 39 of their papers we have counts for
39 papers
Beam Training and Alignment for RIS-Assisted Millimeter Wave Systems:State of the Art and Beyond
Peilan Wang, Jun Fang, Weizheng Zhang +3
Reconfigurable intelligent surface (RIS) has recently emerged as a promising paradigm for future cellular networks. Specifically, due to its capability in reshaping the propagation…
A Unified 3D Beam Training and Tracking Procedure for Terahertz Communication
Boyu Ning, Zhi Chen, Zhongbao Tian +2
Terahertz (THz) communication is considered as an attractive way to overcome the bandwidth bottleneck and satisfy the ever-increasing capacity demand in the future. Due to the high…
Sensing Integrated DFT-Spread OFDM Waveform and Deep Learning-powered Receiver Design for Terahertz Integrated Sensing and Communication Systems
Yongzhi Wu, Filip Lemic, Chong Han +1
Terahertz (THz) communications are envisioned as a key technology of next-generation wireless systems due to its ultra-broad bandwidth. One step forward, THz integrated sensing and…
Improving THz Coverage for 6G URLLC Services via Exploiting Mobile Computing
Sha Xie, Lingxiang Li, Zhi Chen +1
Terahertz (THz) communication (0.1-10 THz) is regarded as a promising technology, which provides rich available bandwidth and high data rate of terahertz bit per second (Tbps). How…
3D Beam Training in Terahertz Communication: A Quadruple-UPA Architecture
Zhongbao Tian, Zhi Chen, Boyu Ning
In this paper, we propose a quadruple-UPA architecture for realizing the beamforming with wide coverage in terahertz (THz) communication. Considering the severe path loss suffered…
Intelligent Reflecting Surface Assisted Terahertz Communications toward 6G
Zhi Chen, Boyu Ning, Chong Han +2
Terahertz (THz) communications have emerged as a promising candidate to support the heavy data traffic and exploding network capacity in the future 6G wireless networks. However, T…
Joint Hardware Design and Capacity Analysis for Intelligent Reflecting Surface Enabled Terahertz MIMO Communications
Xinying Ma, Zhi Chen, Longfei Yan +2
Terahertz (THz) communications have been envisioned as a promising enabler to provide ultra-high data transmission for sixth generation (6G) wireless networks. To tackle the blocka…
Joint Power Allocation and Passive Beamforming Design for IRS-Assisted Physical-Layer Service Integration
Boyu Ning, Zhi Chen, Zhongbao Tian +1
Intelligent reflecting surface (IRS) has emerged as an appealing solution to enhance the wireless communication performance by reconfiguring the wireless propagation environment. I…
Terahertz Communications (TeraCom): Challenges and Impact on 6G Wireless Systems
Chong Han, Yongzhi Wu, Zhi Chen +1
Terahertz communications are envisioned as a key technology for 6G, which requires 100+ Gbps data rates, 1-millisecond latency, among other performance metrics. As a fundamental wi…
Reconfigurable Intelligent Surface-Based Wireless Communication: Antenna Design, Prototyping and Experimental Results
Linglong Dai, Bichai Wang, Min Wang +8
One of the key enablers of future wireless communications is constituted by massive multiple-input multiple-output (MIMO) systems, which can improve the spectral efficiency by orde…
Terahertz Multi-User Massive MIMO with Intelligent Reflecting Surface: Beam Training and Hybrid Beamforming
Boyu Ning, Zhi Chen, Wenrong Chen +2
Terahertz (THz) communications open a new frontier for the wireless network thanks to their dramatically wider available bandwidth compared to the current micro-wave and forthcomin…
Channel Estimation and Transmission for Intelligent Reflecting Surface Assisted THz Communications
Boyu Ning, Zhi Chen, Wenrong Chen +1
Intelligent reflecting surface (IRS) is envisioned as a promising technology to broaden signal coverage and enhance transmission in terahertz (THz) communications. Due to the passi…
Beamforming Optimization for Intelligent Reflecting Surface Assisted MIMO: A Sum-Path-Gain Maximization Approach
Boyu Ning, Zhi Chen, Wenjie Chen +1
Recently, intelligent reflecting surface (IRS) has emerged as an appealing technique that enables wireless communications with low hardware cost and low power consumption. In this…
Intelligent Reflecting Surface-Assisted Millimeter Wave Communications: Joint Active and Passive Precoding Design
Peilan Wang, Jun Fang, Xiaojun Yuan +3
Millimeter wave (MmWave) communications is capable of supporting multi-gigabit wireless access thanks to its abundant spectrum resource. However, the severe path loss and high dire…
An Incentive-Aware Job Offloading Control Framework for Mobile Edge Computing
Lingxiang Li, Tony Q. S. Quek, Ju Ren +3
This paper considers a scenario in which an access point (AP) is equipped with a mobile edge server of finite computing power, and serves multiple resource-hungry mobile users by c…
Fast Beam Alignment for Millimeter Wave Communications: A Sparse Encoding and Phaseless Decoding Approach
Xingjian Li, Jun Fang, Huiping Duan +2
In this paper, we studied the problem of beam alignment for millimeter wave (mmWave) communications, in which we assume a hybrid analog and digital beamforming structure is employe…
Supervised and Semi-Supervised Deep Neural Networks for CSI-Based Authentication
Qian Wang, Hang Li, Zhi Chen +3
From the viewpoint of physical-layer authentication, spoofing attacks can be foiled by checking channel state information (CSI). Existing CSI-based authentication algorithms mostly…
Joint Power and Trajectory Design for Physical-Layer Secrecy in the UAV-Aided Mobile Relaying System
Qian Wang, Zhi Chen, Shaoqian Li
Mobile relaying is emerged as a promising technique to assist wireless communication, driven by the rapid development of unmanned aerial vehicles (UAVs). In this paper, we study se…
Intelligent Power Control for Spectrum Sharing in Cognitive Radios: A Deep Reinforcement Learning Approach
Xingjian Li, Jun Fang, Wen Cheng +3
We consider the problem of spectrum sharing in a cognitive radio system consisting of a primary user and a secondary user. The primary user and the secondary user work in a non-coo…
Physical Layer Service Integration in 5G: Potentials and Challenges
Weidong Mei, Zhi Chen, Jun Fang +1
High transmission rate and secure communication have been identified as the key targets that need to be effectively addressed by fifth generation (5G) wireless systems. In this con…
Artificial Noise-Aided Biobjective Transmitter Optimization for Service Integration in Multi-User MIMO Gaussian Broadcast Channel
Weidong Mei, Zhi Chen, Jun Fang +1
This paper considers an artificial noise (AN)-aided transmit design for multi-user MIMO systems with integrated services. Specifically, two sorts of service messages are combined a…
Compressive Channel Estimation and Multi-user Detection in C-RAN
Qi He, Tony Q. S. Quek, Zhi Chen +1
This paper considers the channel estimation (CE) and multi-user detection (MUD) problems in cloud radio access network (C-RAN). Assuming that active users are sparse in the network…
MIMO Secret Communications Against an Active Eavesdropper
Lingxiang Li, Athina P. Petropulu, Zhi Chen
This paper considers a scenario in which an Alice-Bob pair wishes to communicate in secret in the presence of an active Eve, who is capable of jamming as well as eavesdropping in F…
Transmit design for MIMO wiretap channel with a malicious jammer
Duo Zhang, Weidong Mei, Lingxiang Li +1
In this paper, we consider the transmit design for multi-input multi-output (MIMO) wiretap channel including a malicious jammer. We first transform the system model into the tradit…