no code implementations • 11 Jan 2024 • Yuanwei Liu, Chongjun Ouyang, Zhaolin Wang, Jiaqi Xu, Xidong Mu, A. Lee Swindlehurst
This evolution is giving rise to the emergence of near-field communications (NFC) in future wireless systems.
no code implementations • 28 Nov 2022 • Jiaqi Xu, Xidong Mu, Yuanwei Liu
Exploiting the electric current distribution, a Green's function method based channel model is proposed.
no code implementations • 12 Sep 2022 • Jiaqi Xu, Xidong Mu, Joey Tianyi Zhou, Yuanwei Liu
A hardware model and a signal model are proposed for dual-sided simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs), where the signal simultaneously incident on both sides of the surface.
no code implementations • 26 Jun 2022 • Qiling Gao, Yuanwei Liu, Xidong Mu, Min Jia, Dongbo Li, Lajos Hanzo
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) communication systems are investigated in its vicinity, where a STAR-RIS is deployed within a predefined region for establishing communication links for users.
no code implementations • 24 May 2022 • Yanling Hao, Zhiyuan Shi, Xidong Mu, Yuanwei Liu
WiFi-based human action recognition (HAR) has been regarded as a promising solution in applications such as smart living and remote monitoring due to the pervasive and unobtrusive nature of WiFi signals.
no code implementations • 10 May 2022 • Ruikang Zhong, Yuanwei Liu, Xidong Mu, Yue Chen, Xianbin Wang, Lajos Hanzo
Despite the coupled nature of the phase-shift model, the formulated problem is solved by invoking a hybrid continuous and discrete phase-shift control policy.
no code implementations • 3 May 2022 • Xinyu Gao, Xidong Mu, Wenqiang Yi, Yuanwei Liu
The goal is to maximize the sum-rate of whole trajectories for the multi-robot system by jointly optimizing trajectories and NOMA decoding orders of robots, phase-shift coefficients of the RIS, and the power allocation of the AP, subject to predicted initial and final positions of robots and the quality of service (QoS) of each robot.
no code implementations • 28 Apr 2022 • Xiaoxia Xu, Yuanwei Liu, Qimei Chen, Xidong Mu, Zhiguo Ding
A multi-cell cluster-free NOMA framework is proposed, where both intra-cell and inter-cell interference are jointly mitigated via flexible cluster-free successive interference cancellation (SIC) and coordinated beamforming design.
no code implementations • 13 Aug 2021 • Jiaqi Xu, Yuanwei Liu, Xidong Mu, Joey Tianyi Zhou, Lingyang Song, H. Vincent Poor, Lajos Hanzo
With the rapid development of advanced electromagnetic manipulation technologies, researchers and engineers are starting to study smart surfaces that can achieve enhanced coverages, high reconfigurability, and are easy to deploy.
no code implementations • 15 Jul 2021 • Xiaoxia Xu, Qimei Chen, Xidong Mu, Yuanwei Liu, Hao Jiang
With the accelerated development of immersive applications and the explosive increment of internet-of-things (IoT) terminals, 6G would introduce terahertz (THz) massive multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) technologies to meet the ultra-high-speed transmission and massive connectivity requirements.
no code implementations • 20 Apr 2021 • Chenyu Wu, Yuanwei Liu, Xidong Mu, Xuemai Gu, Octavia A. Dobre
A sum coverage range maximization problem is formulated for both non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA), where the resource allocation at the access point and the transmission and reflection coefficients at the STAR-RIS are jointly optimized to satisfy the communication requirements of users.
no code implementations • 24 Jan 2021 • Jiaqi Xu, Yuanwei Liu, Xidong Mu, Octavia A. Dobre
In this letter, simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) are studied.
no code implementations • 9 Dec 2020 • Yuanwei Liu, Xiao Liu, Xinyu Gao, Xidong Mu, Xiangwei Zhou, Octavia A. Dobre, H. Vincent Poor
Furthermore, dynamic trajectory design and resource allocation for both indoor and outdoor robots are provided to verify the performance of robotic communications in the context of typical robotic application scenarios.
Robotics Systems and Control Signal Processing Systems and Control
no code implementations • 18 Nov 2020 • Xinyu Gao, Yuanwei Liu, Xidong Mu
A novel intelligent reflecting surface (IRS)-aided multi-robot network is proposed, where multiple mobile wheeled robots are served by an access point (AP) through non-orthogonal multiple access (NOMA).
Robotics
no code implementations • 27 Sep 2020 • Xidong Mu, Yuanwei Liu, Li Guo, Jiaru Lin, Robert Schober
Based on the obtained channel power gain map, the communication-aware robot path planing problem is solved by exploiting graph theory.
no code implementations • 24 Sep 2020 • Xidong Mu, Yuanwei Liu, Li Guo, Jiaru Lin, Robert Schober
Based on the obtained channel power gain map, the communication-aware robot path planing problem is solved as a shortest path problem by exploiting graph theory.
no code implementations • 7 Jul 2020 • Yuanwei Liu, Xiao Liu, Xidong Mu, Tianwei Hou, Jiaqi Xu, Marco Di Renzo, Naofal Al-Dhahir
In this context, we provide a comprehensive overview of the state-of-the-art on RISs, with focus on their operating principles, performance evaluation, beamforming design and resource management, applications of machine learning to RIS-enhanced wireless networks, as well as the integration of RISs with other emerging technologies.
no code implementations • 30 Oct 2019 • Xidong Mu, Yuanwei Liu, Li Guo, Jiaru Lin, Naofal Al-Dhahir
Our goal is to maximize the sum rate of all users by jointly optimizing the active beamforming at the BS and the passive beamforming at the IRS, subject to successive interference cancellation decoding rate conditions and IRS reflecting elements constraints.