Central China Normal University（华中师范大学）；Hubei University of Arts and Science（湖北文理学院）；Henan Polytechnic University（河南理工大学）；Laval University（拉瓦尔大学）；Memorial University（纪念大学）
Ji Wang, Hao Chen, Yixuan Li, Jun Zhang, Xingwang Li, Ming Zeng, Octavia A. Dobre
备注：
12 pages, 6 figures. This paper has been submitted to IEEE Transactions on Vehicular Technology
This paper investigates a rotatable antenna (RA) assisted mobile edge computing (MEC) network, where multiple users offload their computation tasks to an edge server equipped with an RA array under a time-division multiple access protocol. To maximize the weighted sum computation rate, we formulate a joint optimization problem over the RA rotation angles, time-slot allocation, transmit power, and local CPU frequencies. Due to the non-convex nature of the formulated problem, a scenario-adaptive hybrid optimization algorithm is proposed. Specifically, for the dynamic rotating scenario, where RAs can flexibly reorient within each time slot, we derive closed-form optimal antenna pointing vectors to enable a low-complexity sequential solution. In contrast, for the static rotating scenario where RAs maintain a unified orientation, we develop an alternating optimization framework, where the non-convex RA rotation constraints are handled using successive convex approximation iteratively with the resource allocation. Simulation results demonstrate that the proposed RA assisted MEC network significantly outperforms conventional fixed-antenna MEC networks. Owing to the additional spatial degrees of freedom introduced by mechanical rotation, the flexibility of RAs effectively mitigates the severe beam misalignment inherent in fixed-antenna systems, particularly under high antenna directivity.
Rotatable Antenna-Enhanced Cell-Free Communication
South China University of Technology（华南理工大学）；KTH Royal Institute of Technology（皇家理工学院）；Friedrich Alexander-University Erlangen-Nürnberg（埃尔朗根-纽伦堡弗里德里希·亚历山大大学）
Antenna Orientation Optimization for Rotatable Antenna-Enabled ISAC Systems
School of Microelectronics, South China University of Technology（华南理工大学微电子学院）；School of Information Engineering, Guangdong University of Technology（广东工业大学信息工程学院）
Rotatable Antenna-Enabled Satellite Communication: Joint Design of Boresight Alignment and Beam Tracking
School of Microelectronics, South China University of Technology（华南理工大学微电子学院）；Department of Electronic and Electrical Engineering, Southern University of Science and Technology（南方科技大学电子电气工程系）；Shenzhen Key Laboratory of Optoelectronics and Intelligent Sensing（深圳光电子与智能传感重点实验室）；Wireless and Computing Research Institute, ZTE Corporation（中兴通讯无线与计算研究院）
Joint Transceiver Orientation Optimization for Rotatable-Antenna MIMO Capacity Maximization
School of Information Science and Electronic Engineering, Shanghai Jiao Tong University（上海交通大学信息科学与电子工程学院）；State Key Laboratory of Internet of Things for Smart City and the Department of Electrical and Computer Engineering, University of Macau（澳门大学物联网智能城市国家重点实验室及电气与计算机工程系）
South China University of Technology（华南理工大学）；University of Electronic Science and Technology of China（电子科技大学）；Southern University of Science and Technology（南方科技大学）；Shanghai Jiao Tong University（上海交通大学）
Rotatable Antenna-Empowered Wireless Networks: A Tutorial
School of Microelectronics, South China University of Technology（华南理工大学微电子学院）；Department of Electronic and Electrical Engineering, Southern University of Science and Technology (SUSTech)（南方科技大学电子与电气工程系）；Department of Electrical and Computer Engineering, University of Waterloo（滑铁卢大学电气与计算机工程系）；State Key Laboratory of CNS/ATM and the School of Interdisciplinary Science, Beijing Institute of Technology（北京理工大学神经系统/原子交通控制国家重点实验室及交叉科学研究院）；National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China（电子科技大学无线通信国家重点实验室）；Department of Electronic Engineering, Shanghai Jiao Tong University（上海交通大学电子工程系）；School of Electronic and Information Engineering, South China University of Technology（华南理工大学电子与信息工程学院）
Antenna selection is capable of reducing the hardware complexity of massive multiple-input multiple-output (MIMO) networks at the cost of certain performance degradation. Reconfigurable intelligent surface (RIS) has emerged as a cost-effective technique that can enhance the spectrum-efficiency of wireless networks by reconfiguring the propagation environment. By employing RIS to compensate the performance loss due to antenna selection, in this paper we propose a new network architecture, i.e., RIS-assisted massive MIMO system with antenna selection, to enhance the system performance while enjo…
In this paper, we study the resource allocation for an intelligent reflecting surface (IRS)-assisted uplink system, where the base station is equipped with multiple antennas. We propose to jointly optimize the transmit power of the users, active beamforming at the base station, and passive beamforming at the IRS to maximize the overall system energy efficiency while maintaining users' minimum rate constraints. This problem belongs to a highly intractable non-convex bi-quadratic programming problem, for which an iterative solution based on block coordinate descent is proposed. Extensive simulat…
Physical-layer key generation (PKG) can generate symmetric keys between two communication ends based on the reciprocal uplink and downlink channels. By smartly reconfiguring the radio signal propagation, intelligent reflecting surface (IRS) is able to improve the secret key rate of PKG. However, existing works involving IRS-assisted PKG are concentrated in single-antenna wireless networks. So this paper investigates the problem of PKG in the IRS-assisted multiple-input single-output (MISO) system, which aims to maximize the secret key rate by optimally designing the IRS passive beamforming. Fi…
DRL-Based Antenna Position Optimization For MA-Assisted OTFS System Under Imperfect CSI
School of Information Science and Engineering, Shandong University（山东大学信息科学与工程学院）；School of Electrical and Electronics Engineering, Nanyang Technological University（南洋理工大学电气与电子工程学院）
Fluid-Antenna-Assisted Distributed Joint Decoding for Cell-Free Massive MIMO Unsourced Random Access
Southeast University（东南大学）；National Mobile Communications Research Laboratory, Frontiers Science Center for Mobile Information Communication and Security, Southeast University（国家移动通信重点实验室，移动信息与安全前沿科学中心，东南大学）；Purple Mountain Laboratories（紫金山实验室）
Fluid Antennas Assisted RIS-NOMA Communication Networks
Beihang University（北京航空航天大学）；North China University of Water Resources and Electric Power（华北水利水电大学）；Manchester Metropolitan University（曼彻斯特城市大学）；Queen Mary University of London（伦敦玛丽女王大学）
School of Information Science and Engineering, Southeast University（东南大学信息科学与工程学院）；National Mobile Communications Research Laboratory, Southeast University（东南大学移动通信国家重点实验室）
