912 citations · 10.1k across the 293 of their papers we have counts for
36 papers · 1 filter
Joint Beamforming for STAR-RIS in Near-Field Communications
Li Haochen, Yuanwei Liu, Xidong Mu +2
A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided near-field multiple-input multiple-output (MIMO) communication framework is propose…
STAR-RIS Aided Integrated Sensing, Computing, and Communication for Internet of Robotic Things
Haochen Li, Xidong Mu, Yuanwei Liu +2
A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided integrated sensing, computing, and communication (ISCC) Internet of Robotic Things…
Accelerating Mobile Edge Generation (MEG) by Constrained Learning
Xiaoxia Xu, Yuanwei Liu, Xidong Mu +2
A novel accelerated mobile edge generation (MEG) framework is proposed for generating high-resolution images on mobile devices. Exploiting a large-scale latent diffusion model (LDM…
Near-Field Sensing Enabled Predictive Beamforming: From Estimation to Tracking
Hao Jiang, Zhaolin Wang, Yuanwei Liu
A near-field sensing (NISE) enabled predictive beamforming framework is proposed to facilitate wireless communications with high-mobility channels. Unlike conventional far-field se…
A Homogeneous Graph Neural Network for Precoding and Power Allocation in Scalable Wireless Networks
Mingjun Sun, Shaochuan Wu, Haojie Wang +3
Deep learning is widely used in wireless communications but struggles with fixed neural network sizes, which limit their adaptability in environments where the number of users and…
Diversity and Multiplexing for Continuous Aperture Array (CAPA)-Based Communications
Chongjun Ouyang, Zhaolin Wang, Xingqi Zhang +1
A general fading model for multipath channels between two non-parallel continuous-aperture arrays (CAPAs) is proposed. Building on this model, the performance of diversity and mult…
Performance Analysis of Physical Layer Security: From Far-Field to Near-Field
Boqun Zhao, Chongjun Ouyang, Xingqi Zhang +1
The secrecy performance in both near-field and far-field communications is analyzed using two fundamental metrics: the secrecy capacity under a power constraint and the minimum pow…
Multi-objective Aerial Collaborative Secure Communication Optimization via Generative Diffusion Model-enabled Deep Reinforcement Learning
Chuang Zhang, Geng Sun, Jiahui Li +4
Due to flexibility and low-cost, unmanned aerial vehicles (UAVs) are increasingly crucial for enhancing coverage and functionality of wireless networks. However, incorporating UAVs…
Mobile Edge Generation-Enabled Digital Twin: Architecture Design and Research Opportunities
Xiaoxia Xu, Ruikang Zhong, Xidong Mu +2
A novel paradigm of mobile edge generation (MEG)-enabled digital twin (DT) is proposed, which enables distributed on-device generation at mobile edge networks for real-time DT appl…
Sustainable Wireless Networks via Reconfigurable Intelligent Surfaces (RISs): Overview of the ETSI ISG RIS
Ruiqi Liu, Shuang Zheng, Qingqing Wu +5
Reconfigurable Intelligent Surfaces (RISs) are a novel form of ultra-low power devices that are capable to increase the communication data rates as well as the cell coverage in a c…
Continuous-Aperture Array (CAPA)-Based Wireless Communications: Capacity Characterization
Boqun Zhao, Chongjun Ouyang, Xingqi Zhang +1
The capacity limits of continuous-aperture array (CAPA)-based wireless communications are characterized. To this end, an analytically tractable transmission framework is establishe…
Hybrid Beamforming Design for Near-Field ISAC with Modular XL-MIMO
Chunwei Meng, Dingyou Ma, Zhaolin Wang +3
A novel modular extremely large-scale multiple-input-multiple-output (XL-MIMO) integrated sensing and communication (ISAC) framework is proposed in this paper. We consider a downli…
Near-Field Localization and Sensing with Large-Aperture Arrays: From Signal Modeling to Processing
Zhaolin Wang, Parisa Ramezani, Yuanwei Liu +1
The signal processing community is currently witnessing a growing interest in near-field signal processing, driven by the trend towards the use of large aperture arrays with high s…
Aperture Selection for CAP Arrays (CAPAs)
Chongjun Ouyang, Yuanwei Liu, Xingqi Zhang
The concept of aperture selection is proposed for continuous aperture array (CAPA)-based communications. The achieved performance is analyzed in an uplink scenario by considering b…
On the Performance of Continuous Aperture Array (CAPA)-Based Wireless Communications
Chongjun Ouyang, Yuanwei Liu, Xingqi Zhang
The performance of continuous aperture array (CAPA)-based wireless communications is analyzed in an uplink scenario. An analytical framework is proposed to characterize uplink CAPA…
Channel Capacity of Near-Field Line-of-Sight Multiuser Communications
Boqun Zhao, Chongjun Ouyang, Xingqi Zhang +1
The channel capacity of near-field (NF) communications is characterized by considering three types of line-of-sight multiuser channels: i) multiple access channel (MAC), ii) broadc…
On the Impact of Reactive Region on the Near-Field Channel Gain
Chongjun Ouyang, Zhaolin Wang, Boqun Zhao +2
The near-field channel gain is analyzed by considering both radiating and reactive components of the electromagnetic field. Novel expressions are derived for the channel gains of s…
Cramer-Rao Bounds for Near-Field Sensing: A Generic Modular Architecture
Chunwei Meng, Dingyou Ma, Xu Chen +2
A generic modular array architecture is proposed, featuring uniform/non-uniform subarray layouts that allows for flexible deployment. The bistatic near-field sensing system is cons…
Wideband Beamforming for Near-Field Communications with Circular Arrays
Yunhui Guo, Yang Zhang, Zhaolin Wang +1
The beamforming performance of the uniform circular array (UCA) in near-field wideband communication systems is investigated. Compared to uniform linear array (ULA), UCA exhibits u…
Performance Bounds of Near-Field Sensing with Circular Arrays
Zhaolin Wang, Xidong Mu, Yuanwei Liu
The performance bounds of near-field sensing are studied for circular arrays, focusing on the impact of bandwidth and array size. The closed-form Cramer-Rao bound (CRBs) for angle…
Performance Analysis of Near-Field Sensing in Wideband MIMO Systems
Zhaolin Wang, Xidong Mu, Yuanwei Liu
The performance of near-field sensing (NISE) in a legacy wideband multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) communication system is an…
Adaptive TTD Configurations for Near-Field Communications: An Unsupervised Transformer Approach
Hsienchih Ting, Zhaolin Wang, Yuanwei Liu
True-time delayers (TTDs) are popular analog devices for facilitating near-field wideband beamforming subject to the spatial-wideband effect. In this paper, an adaptive TTD configu…
Coexisting Passive RIS and Active Relay Assisted NOMA Systems
Ao Huang, Li Guo, Xidong Mu +2
A novel coexisting passive reconfigurable intelligent surface (RIS) and active decode-and-forward (DF) relay assisted non-orthogonal multiple access (NOMA) transmission framework i…
Secure Communication of Active RIS Assisted NOMA Networks
Xuehua Li, Yingjie Pei, Xinwei Yue +2
As a revolutionary technology, reconfigurable intelligent surface (RIS) has been deemed as an indispensable part of the 6th generation communications due to its inherent ability to…