434 citations · 1.1k across the 45 of their papers we have counts for
39 papers · 1 filter
Dual-Functional MIMO Beamforming Optimization for RIS-Aided Integrated Sensing and Communication
Xin Zhao, Heng Liu, Shiqi Gong +3
Aiming at providing wireless communication systems with environment-perceptive capacity, emerging integrated sensing and communication (ISAC) technologies face multiple difficultie…
A Unified Joint Optimization of Training Sequences and Transceivers Based on Matrix-Monotonic Optimization
Chengwen Xing, Tao Yu, Jinpeng Song +3
Channel estimation and data transmission constitute the most fundamental functional modules of multiple-input multiple-output (MIMO) communication systems. The underlying key tasks…
LEO Satellite-Enabled Grant-Free Random Access with MIMO-OTFS
Boxiao Shen, Yongpeng Wu, Wenjun Zhang +3
This paper investigates joint channel estimation and device activity detection in the LEO satellite-enabled grant-free random access systems with large differential delay and Doppl…
Massive Unsourced Random Access: Exploiting Angular Domain Sparsity
Xinyu Xie, Yongpeng Wu, Jianping An +5
This paper investigates the unsourced random access (URA) scheme to accommodate numerous machine-type users communicating to a base station equipped with multiple antennas. Existin…
Joint Device Detection, Channel Estimation, and Data Decoding with Collision Resolution for MIMO Massive Unsourced Random Access
Tianya Li, Yongpeng Wu, Mengfan Zheng +5
In this paper, we investigate a joint device activity detection (DAD), channel estimation (CE), and data decoding (DD) algorithm for multiple-input multiple-output (MIMO) massive u…
Deep Learning based Channel Extrapolation for Large-Scale Antenna Systems: Opportunities, Challenges and Solutions
Shun Zhang, Yushan Liu, Feifei Gao +3
With the depletion of spectrum, wireless communication systems turn to exploit large antenna arrays to achieve the degree of freedom in space domain, such as millimeter wave massiv…
Majorization-Minimization Aided Hybrid Transceivers for MIMO Interference Channels
Shiqi Gong, Chengwen Xing, Vincent K. N. Lau +2
The potential of deploying large-scale antenna arrays in future wireless systems has stimulated extensive research on hybrid transceiver designs aiming to approximate the optimal f…
Multi-Antenna Aided Secrecy Beamforming Optimization for Wirelessly Powered HetNets
Shiqi Gong, Shaodan Ma, Chengwen Xing +2
The new paradigm of wirelessly powered two-tier heterogeneous networks (HetNets) is considered in this paper. Specifically, the femtocell base station (FBS) is powered by a power b…
Hybrid Transceiver Optimization for Multi-Hop Communications
Chengwen Xing, Xin Zhao, Shuai Wang +3
Multi-hop communication with the aid of large-scale antenna arrays will play a vital role in future emergence communication systems. In this paper, we investigate amplify-and-forwa…
A Framework on Hybrid MIMO Transceiver Design based on Matrix-Monotonic Optimization
Chengwen Xing, Xin Zhao, Wei Xu +2
Hybrid transceiver can strike a balance between complexity and performance of multiple-input multiple-output (MIMO) systems. In this paper, we develop a unified framework on hybrid…
New Viewpoint and Algorithms for Water-Filling Solutions in Wireless Communications
Chengwen Xing, Yindi Jing, Shuai Wang +2
Water-filling solutions play an important role in the designs for wireless communications, e.g., transmit covariance matrix design. A traditional physical understanding is to use t…
Optimal Beamforming and Time Allocation for Partially Wireless Powered Sensor Networks with Downlink SWIPT
Shiqi Gong, Shaodan Ma, Chengwen Xing +1
Wireless powered sensor networks (WPSNs) have emerged as a key development towards the future self-sustainable Internet of Things (IoT) networks. To achieve a good balance between…
Unified Framework of KKT Conditions Based Matrix Optimizations for MIMO Communications
Chengwen Xing, Yindi Jing, Shuai Wang +4
For multi-input multi-output (MIMO) communication systems, many transceiver design problems involve the optimization of the covariance matrices of the transmitted signals. The deri…
Iterative Receivers for Downlink MIMO-SCMA: Message Passing and Distributed Cooperative Detection
Weijie Yuan, Nan Wu, Qinghua Guo +3
The rapid development of the mobile communications requires ever higher spectral efficiency. The non-orthogonal multiple access (NOMA) has emerged as a promising technology to furt…
NOMA based Calibration for Large-Scale Spaceborne Antenna Arrays
Yujie Lin, Shuai Wang, Xiangyuan Bu +2
In the parallel calibration for transmitting phased arrays, the calibration receiver must separate the signals belonging to different antenna elements to avoid mutual interference.…
On Weighted MSE Model for MIMO Transceiver Optimization
Chengwen Xing, Yindi Jing, Yiqing Zhou
Mean-squared-error (MSE) is one of the most widely used performance metrics for the designs and analysis of multi-input-multiple-output (MIMO) communications. Weighted MSE minimiza…
Polarization Sensitive Array Based Physical-Layer Security
Shiqi Gong, Chengwen Xing, Sheng Chen +1
We propose a comprehensive framework exploiting the polarization sensitive array (PLA) to improve the physical layer security of wireless communications. More specifically, the pol…
A Framework for Transceiver Designs for Multi-Hop Communications with Covariance Shaping Constraints
Chengwen Xing, Feifei Gao, Yiqing Zhou
For multiple-input multiple-output (MIMO) transceiver designs, sum power constraint is an elegant and ideal model. When various practical limitations are taken into account e.g., p…
Transceiver designs with matrix-version water-filling architecture under mixed power constraints
Chengwen Xing, Zesong Fei, Yiqing Zhou +2
In this paper, we investigate the multiple-input multiple-output (MIMO) transceiver design under an interesting power model named mixed power constraints. In the considered power m…
Performance Analysis and Location Optimization for Massive MIMO Systems with Circularly Distributed Antennas
Ang Yang, Yindi Jing, Chengwen Xing +2
In this paper, we analyze the achievable rate of the uplink of a single-cell multi-user distributed massive multiple-input-multiple-output (MIMO) system. The multiple users are equ…
The Role of Large-Scale Fading in Uplink Massive MIMO Systems
Ang Yang, Zunwen He, Chengwen Xing +2
In this correspondence, we analyze the ergodic capacity of a large uplink multi-user multiple-input multiple-output (MU-MIMO) system over generalized- fading channels. In the co…
A Framework of Performance Analysis for Distributed Antenna Systems Based on Random Matrix Theory
Ang Yang, Zesong Fei, Chengwen Xing +4
Future communications systems will definitely be built on green infrastructures. To realize such a goal, recently a new network infrastructure named cloud radio access network (C-R…
Matrix-Monotonic Optimization for MIMO Systems
Chengwen Xing, Shaodan Ma, Yiqing Zhou
For MIMO systems, due to the deployment of multiple antennas at both the transmitter and the receiver, the design variables e.g., precoders, equalizers, training sequences, etc. ar…
Adaptive Multi-objective Optimization for Energy Efficient Interference Coordination in Multi-Cell Networks
Zesong Fei, Chengwen Xing, Na Li +1
In this paper, we investigate the distributed power allocation for multi-cell OFDMA networks taking both energy efficiency and inter-cell interference (ICI) mitigation into account…