725 citations · 2.3k across the 91 of their papers we have counts for
70 papers · 1 filter
Integrating Sensing, Computing, and Communication in 6G Wireless Networks: Design and Optimization
Qiao Qi, Xiaoming Chen, Ata Khalili +3
The roll-out of various emerging wireless services has triggered the need for the sixth-generation (6G) wireless networks to provide functions of target sensing, intelligent comput…
Multi-User Wireless Communications with Holographic MIMO Surfaces: A Convenient Channel Model and Spectral Efficiency Analysis
Li Wei, Chongwen Huang, George C. Alexandropoulos +4
The multi-user Holographic Multiple-Input and Multiple-Output Surface (MU-HMIMOS) paradigm, which is capable of realizing large continuous apertures with minimal power consumption…
Online Deep Neural Network for Optimization in Wireless Communications
Jiabao Gao, Caijun Zhong, Geoffrey Ye Li +1
Recently, deep neural network (DNN) has been widely adopted in the design of intelligent communication systems thanks to its strong learning ability and low testing complexity. How…
Deep Learning based Channel Estimation for Massive MIMO with Hybrid Transceivers
Jiabao Gao, Caijun Zhong, Geoffrey Ye Li +1
Accurate and efficient estimation of the high dimensional channels is one of the critical challenges for practical applications of massive multiple-input multiple-output (MIMO). In…
Unsourced Random Massive Access with Beam-Space Tree Decoding
Jingze Che, Zhaoyang Zhang, Zhaohui Yang +3
The core requirement of massive Machine-Type Communication (mMTC) is to support reliable and fast access for an enormous number of machine-type devices (MTDs). In many practical ap…
Multi-User Holographic MIMO Surfaces: Channel Modeling and Spectral Efficiency Analysis
Li Wei, Chongwen Huang, George C. Alexandropoulos +4
The multi-user Holographic Multiple-Input and Multiple-Output Surface (MU-HMIMOS) paradigm, which is capable of realizing large continuous apertures with minimal power consumption,…
Exploiting Simultaneous Low-Rank and Sparsity in Delay-Angular Domain for Millimeter-Wave/Terahertz Wideband Massive Access
Xiaodan Shao, Xiaoming Chen, Caijun Zhong +1
Millimeter-wave (mmW)/Terahertz (THz) wideband communication employing a large-scale antenna array is a promising technique of the sixth-generation (6G) wireless network for realiz…
An Attention-Aided Deep Learning Framework for Massive MIMO Channel Estimation
Jiabao Gao, Mu Hu, Caijun Zhong +2
Channel estimation is one of the key issues in practical massive multiple-input multiple-output (MIMO) systems. Compared with conventional estimation algorithms, deep learning (DL)…
Bidirectional Approximate Message Passing for RIS-Assisted Multi-User MISO Communications
Li Wei, Chongwen Huang, Qinghua Guo +3
Reconfigurable intelligent surfaces (RISs) have been recently considered as a promising candidate for energy-efficient solutions in future wireless networks. Their dynamic and lowp…
Angle-Domain Intelligent Reflecting Surface Systems: Design and Analysis
Xiaoling Hu, Caijun Zhong, Zhaoyang Zhang
This paper considers an angle-domain intelligent reflecting surface (IRS) system. We derive maximum likelihood (ML) estimators for the effective angles from the base station (BS) t…
Feature-Aided Adaptive-Tuning Deep Learning for Massive Device Detection
Xiaodan Shao, Xiaoming Chen, Yiyang Qiang +2
With the increasing development of Internet of Things (IoT), the upcoming sixth-generation (6G) wireless network is required to support grant-free random access of a massive number…
Joint Channel Estimation and Signal Recovery in RIS-Assisted Multi-User MISO Communications
Li Wei, Chongwen Huang, George C. Alexandropoulos +3
Reconfigurable Intelligent Surfaces (RISs) have been recently considered as an energy-efficient solution for future wireless networks. Their dynamic and low-power configuration ena…
Cooperative Activity Detection: Sourced and Unsourced Massive Random Access Paradigms
Xiaodan Shao, Xiaoming Chen, Derrick Wing Kwan Ng +2
This paper investigates the issue of cooperative activity detection for grant-free random access in the sixth-generation (6G) cell-free wireless networks with sourced and unsourced…
Integrated Sensing, Computation and Communication in B5G Cellular Internet of Things
Qiao Qi, Xiaoming Chen, Caijun Zhong +1
In this paper, we investigate the issue of integrated sensing, computation and communication (SCC) in beyond fifth-generation (B5G) cellular internet of things (IoT) networks. Acco…
Covariance-Based Cooperative Activity Detection for Massive Grant-Free Random Access
Xiaodan Shao, Xiaoming Chen, Derrick Wing Kwan Ng +2
This paper designs a cooperative activity detection framework for massive grant-free random access in the sixth-generation (6G) cell-free wireless networks based on the covariance…
Robust Design for IRS-Aided Communication Systems with User Location Uncertainty
Xiaoling Hu, Caijun Zhong, Mohamed-Slim Alouini +1
In this paper, we propose a robust design framework for IRS-aided communication systems in the presence of user location uncertainty. By jointly designing the transmit beamforming…
Location Information Aided Multiple Intelligent Reflecting Surface Systems
Xiaoling Hu, Caijun Zhong, Yu Zhang +2
This paper proposes a novel location information aided multiple intelligent reflecting surface (IRS) systems. Assuming imperfect user location information, the effective angles fro…
Robust Design for NOMA-based Multi-Beam LEO Satellite Internet of Things
Jianhang Chu, Xiaoming Chen, Caijun Zhong +1
In this paper, we investigate the issue of massive access in a beyond fifth-generation (B5G) multi-beam low earth orbit (LEO) satellite internet of things (IoT) network in the pres…
Channel Estimation for RIS-Empowered Multi-User MISO Wireless Communications
Li Wei, Chongwen Huang, George C. Alexandropoulos +3
Reconfigurable Intelligent Surfaces (RISs) have been recently considered as an energy-efficient solution for future wireless networks due to their fast and low-power configuration,…
Convolutional Polar Coded Modulation
Kangjian Qin, Zhaoyang Zhang
-ary modulation creates bit channels which are neither independent nor identical, and this causes problems when applying polar coding because polar codes are designed for…
Deep Reinforcement Learning for Joint Beamwidth and Power Optimization in mmWave Systems
Jiabao Gao, Caijun Zhong, Xiaoming Chen +2
This paper studies the joint beamwidth and transmit power optimization problem in millimeter wave communication systems. A deep reinforcement learning based approach is proposed. S…
Robust Design for Intelligent Reflecting Surfaces Assisted MISO Systems
Jiezhi Zhang, Yu Zhang, Caijun Zhong +1
In this work, we study the statistically robust beamforming design for an intelligent reflecting surfaces (IRS) assisted multiple-input single-output (MISO) wireless system under i…
Programmable Metasurface Based Multicast Systems: Design and Analysis
Xiaoling Hu, Caijun Zhong, Yongxu Zhu +2
This paper considers a multi-antenna multicast system with programmable metasurface (PMS) based transmitter. Taking into account of the finite-resolution phase shifts of PMSs, a no…
Joint Activity Detection and Channel Estimation for mmW/THz Wideband Massive Access
Xiaodan Shao, Xiaoming Chen, Caijun Zhong +1
Millimeter-wave/Terahertz (mmW/THz) communications have shown great potential for wideband massive access in next-generation cellular internet of things (IoT) networks. To decrease…