102 citations · 181 across the 19 of their papers we have counts for
19 papers
Large Language Model Empowered CSI Feedback in Massive MIMO Systems
Jie Wu, Wei Xu, Le Liang +2
Despite the success of large language models (LLMs) across domains, their potential for efficient channel state information (CSI) compression and feedback in frequency division dup…
Channel-Aware Deep Learning for Superimposed Pilot Power Allocation and Receiver Design
Run Gu, Renjie Xie, Wei Xu +2
Superimposed pilot (SIP) schemes face significant challenges in effectively superimposing and separating pilot and data signals, especially in multiuser mobility scenarios with rap…
Joint MIMO Transceiver and Reflector Design for Reconfigurable Intelligent Surface-Assisted Communication
Yaqiong Zhao, Jindan Xu, Wei Xu +4
In this paper, we consider a reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output communication system with multiple antennas at both the base station (…
Digital versus Analog Transmissions for Federated Learning over Wireless Networks
Jiacheng Yao, Wei Xu, Zhaohui Yang +3
In this paper, we quantitatively compare these two effective communication schemes, i.e., digital and analog ones, for wireless federated learning (FL) over resource-constrained ne…
Digital Twin Assisted Deep Reinforcement Learning for Online Admission Control in Sliced Network
Zhenyu Tao, Wei Xu, Xiaohu You
The proliferation of diverse wireless services in 5G and beyond has led to the emergence of network slicing technologies. Among these, admission control plays a crucial role in ach…
Wireless Network Digital Twin for 6G: Generative AI as A Key Enabler
Zhenyu Tao, Wei Xu, Yongming Huang +2
Digital twin, which enables emulation, evaluation, and optimization of physical entities through synchronized digital replicas, has gained increasing attention as a promising techn…
Superimposed RIS-phase Modulation for MIMO Communications: A Novel Paradigm of Information Transfer
Jiacheng Yao, Jindan Xu, Wei Xu +2
Reconfigurable intelligent surface (RIS) is regarded as an important enabling technology for the sixth-generation (6G) network. Recently, modulating information in reflection patte…
Imperfect CSI: A Key Factor of Uncertainty to Over-the-Air Federated Learning
Jiacheng Yao, Zhaohui Yang, Wei Xu +2
Over-the-air computation (AirComp) has recently been identified as a prominent technique to enhance communication efficiency of wireless federated learning (FL). This letter invest…
Robust Beamforming Design for RIS-aided Cell-free Systems with CSI Uncertainties and Capacity-limited Backhaul
Jiacheng Yao, Jindan Xu, Wei Xu +3
In this paper, we consider the robust beamforming design in a reconfigurable intelligent surface (RIS)-aided cell-free (CF) system considering the channel state information (CSI) u…
A Universal Framework of Superimposed RIS-Phase Modulation for MISO Communication
Jiacheng Yao, Jindan Xu, Wei Xu +2
To fully exploit the additional dimension brought by reconfigurable intelligent surface (RIS), it is recently suggested by information theory that modulating information upon RIS p…
Worst-case Design for RIS-aided Over-the-air Computation with Imperfect CSI
Wenhui Zhang, Jindan Xu, Wei Xu +2
Over-the-air computation (AirComp) enables fast wireless data aggregation at the receiver through concurrent transmission by sensors in the application of Internet-of-Things (IoT).…
Closed-form Approximation for Performance Bound of Finite Blocklength Massive MIMO Transmission
Xiaohu You, Bin Sheng, Yongming Huang +5
Ultra-reliable low latency communications (uRLLC) is adopted in the fifth generation (5G) mobile networks to better support mission-critical applications that demand high level of…
Semi-supervised MIMO Detection Using Cycle-consistent Generative Adversarial Network
Hongzhi Zhu, Yongliang Guo, Wei Xu +1
In this paper, a new semi-supervised deep multiple-input multiple-output (MIMO) detection approach using a cycle-consistent generative adversarial network (CycleGAN) is proposed fo…
Cooperative Reflection and Synchronization Design for Distributed Multiple-RIS Communications
Yaqiong Zhao, Wei Xu, Xiaohu You +2
To reap the promised gain achieved by distributed reconfigurable intelligent surfaces (RISs)-enhanced communications in a wireless network, timing synchronization among these metas…
Deep CSI Compression for Massive MIMO: A Self-information Model-driven Neural Network
Ziqing Yin, Wei Xu, Renjie Xie +3
In order to fully exploit the advantages of massive multiple-input multiple-output (mMIMO), it is critical for the transmitter to accurately acquire the channel state information (…
Data Augmentation Empowered Neural Precoding for Multiuser MIMO with MMSE Model
Shaoqing Zhang, Jindan Xu, Wei Xu +3
Precoding design exploiting deep learning methods has been widely studied for multiuser multiple-input multiple-output (MU-MIMO) systems. However, conventional neural precoding des…
Cooperative Reflection Design with Timing Offsets in Distributed Multi-RIS Communications
Yaqiong Zhao, Wei Xu, Huan Sun +2
This letter investigates a wireless communication system deploying distributed reconfigurable intelligent surfaces (RISs). Existing works have assumed that perfect timing synchroni…
A Lightweight Deep Network for Efficient CSI Feedback in Massive MIMO Systems
Yuyao Sun, Wei Xu, Le Liang +3
To fully exploit the advantages of massive multiple-input multiple-output (m-MIMO), accurate channel state information (CSI) is required at the transmitter. However, excessive CSI…
ACO-OFDM-Specified Recoverable Upper Clipping With Efficient Detection for Optical Wireless Communications
W. Xu, M. Wu, H. Zhang +2
The high peak-to-average-power ratio (PAPR) of orthogonal frequency-division multiplexing (OFDM) degrades the performance in optical wireless communication systems. This paper prop…