912 citations · 10.1k across the 293 of their papers we have counts for
46 papers · 1 filter
Joint Power Allocation and Decoding Order Selection for NOMA Systems: Outage-Optimal Strategies
Mengqi Yang, Jian Chen, Zhiguo Ding +3
We investigate joint power allocation and decoding order selection (PA-DOS) aimed at enhancing the outage performance of non-orthogonal multiple access (NOMA) systems. By consideri…
Simultaneously Transmitting and Reflecting Surface (STARS) for Terahertz Communications
Zhaolin Wang, Xidong Mu, Jiaqi Xu +1
A simultaneously transmitting and reflecting surface (STARS) aided terahertz (THz) communication system is proposed. A novel power consumption model is proposed that depends on the…
Semantic Communications in Multi-user Wireless Networks
Xidong Mu, Yuanwei Liu
This article investigates the exploitation of semantic communications in multi-user networks. We propose a novel heterogeneous semantic and bit multi-user framework for providing f…
Exploiting STAR-RISs in Near-Field Communications
Jiaqi Xu, Xidong Mu, Yuanwei Liu
The reconfigurable intelligent surface (RIS) is a promising technology to provide smart radio environment. In contrast to the well-studied patch-array-based RISs, this work focuses…
Is the Envelope Beneficial to Non-Orthogonal Multiple Access?
Ziyi Xie, Wenqiang Yi, Xuanli Wu +2
Non-orthogonal multiple access (NOMA) is capable of serving different numbers of users in the same time-frequency resource element, and this feature can be leveraged to carry addit…
Exploiting NOMA and RIS in Integrated Sensing and Communication
Jiakuo Zuo, Yuanwei Liu, Chenming Zhu +3
A novel integrated sensing and communication (ISAC) system is proposed, where a dual-functional base station is utilized to transmit the superimposed non-orthogonal multiple access…
Bidirectional Integrated Sensing and Communication: Full-Duplex or Half-Duplex?
Zhaolin Wang, Xidong Mu, Yuanwei Liu
A bidirectional integrated sensing and communication (ISAC) system is proposed, in which a pair of transceivers carry out two-way communication and mutual sensing. Both full-duplex…
Reconfigurable Intelligent Surface Assisted NOMA Empowered Integrated Sensing and Communication
Jiakuo Zuo, Yuanwei Liu
This paper exploits the potential of reconfigurable intelligent surface (RIS) to improve radar sensing in a non-orthogonal multiple access (NOMA) empowered integrated sensing and c…
Performance Analysis of Reconfigurable Intelligent Surface Assisted Two-Way NOMA Networks
Ziwei Liu, Xinwei Yue, Chao Zhang +4
This paper investigates the performance of reconfigurable intelligent surface assisted two-way non-orthogonal multiple access (RIS-TW-NOMA) networks, where a pair of users exchange…
Exploiting Semantic Communication for Non-Orthogonal Multiple Access
Xidong Mu, Yuanwei Liu
A novel semantics-empowered two-user uplink non-orthogonal multiple access (NOMA) framework is proposed for resource efficiency enhancement. More particularly, a secondary far user…
Simultaneously Transmitting and Reflecting (STAR)-RISs: Are they Applicable to Dual-Sided Incidence?
Jiaqi Xu, Xidong Mu, Joey Tianyi Zhou +1
A hardware model and a signal model are proposed for dual-sided simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs), where the signal simulta…
Knowledge-aided Federated Learning for Energy-limited Wireless Networks
Zhixiong Chen, Wenqiang Yi, Yuanwei Liu +1
The conventional model aggregation-based federated learning (FL) approach requires all local models to have the same architecture, which fails to support practical scenarios with h…
MIMO-ISAC: Performance Analysis and Rate Region Characterization
Chongjun Ouyang, Yuanwei Liu, Hongwen Yang
This article analyzes the performance of sensing and communications (S\&C) achieved by a multiple-input multiple-output downlink integrated S\&C (ISAC) system. Three ISAC scenarios…
DRL Enabled Coverage and Capacity Optimization in STAR-RIS Assisted Networks
Xinyu Gao, Wenqiang Yi, Yuanwei Liu +2
Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) is a promising passive device that contributes to a full-space coverage via transmitting…
Security Enhancement for Coupled Phase-Shift STAR-RIS Networks
Zheng Zhang, Zhaolin Wang, Yuanwei Liu +3
The secure transmission of the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided communication system is investigated. Considering the…
Integrated Sensing and Communications: A Mutual Information-Based Framework
Chongjun Ouyang, Yuanwei Liu, Hongwen Yang +1
Integrated sensing and communications (ISAC) is potentially capable of circumventing the limitations of existing frequency-division sensing and communications (FDSAC) techniques. H…
Coupled Phase-Shift STAR-RISs: A General Optimization Framework
Zhaolin Wang, Xidong Mu, Yuanwei Liu +1
A general optimization framework is proposed for simultaneously transmitting and reflecting reconfigurable surfaces (STAR-RISs) with coupled phase shifts, which converges to the Ka…
Distributed Intelligence in Wireless Networks
Xiaolan Liu, Jiadong Yu, Yuanwei Liu +4
The cloud-based solutions are becoming inefficient due to considerably large time delays, high power consumption, security and privacy concerns caused by billions of connected wire…
Ergodic Rate Analysis of STAR-RIS Aided NOMA Systems
Boqun Zhao, Chao Zhang, Wenqiang Yi +1
This letter analyzes the ergodic rates of a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) sys…
Intelligent Omni-Surfaces: Reflection-Refraction Circuit Model, Full-Dimensional Beamforming, and System Implementation
Shuhao Zeng, Hongliang Zhang, Boya Di +5
The intelligent omni-surface (IOS) is a dynamic metasurface that has recently been proposed to achieve full-dimensional communications by realizing the dual function of anomalous r…
Two-Timescale Design for STAR-RIS Aided NOMA Systems
Chenyu Wu, Changsheng You, Yuanwei Liu +2
Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) have emerged as a promising technology for achieving full-space coverage. Prior works on…
STARS Enabled Integrated Sensing and Communications
Zhaolin Wang, Xidong Mu, Yuanwei Liu
A simultaneously transmitting and reflecting intelligent surface (STARS) enabled integrated sensing and communications (ISAC) framework is proposed, where the whole space is divide…
Joint Location and Beamforming Design for STAR-RIS Assisted NOMA Systems
Qiling Gao, Yuanwei Liu, Xidong Mu +3
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) communication systems are investigated in it…
WiFi-based Spatiotemporal Human Action Perception
Yanling Hao, Zhiyuan Shi, Yuanwei Liu
WiFi-based sensing for human activity recognition (HAR) has recently become a hot topic as it brings great benefits when compared with video-based HAR, such as eliminating the dema…