Results 1 to 10 of about 6,053 (218)

From computer-aided to intelligent machining: Recent advances in computer numerical control machining research [PDF]

, 2015
The aim of this paper is to provide an introduction and overview of recent advances in the key technologies and the supporting computerized systems, and to indicate the trend of research and development in the area of computational numerical control ...
Gao, James, Lee, Chen-Han, Li, Yingguagan   +2 more
core   +1 more source

Path Loss Modeling for RIS-Assisted Wireless Communication in Tunnel Scenarios

Sensors
Aiming to address the problem of limited transmission distance in applying reconfigurable intelligent surface (RIS) technology, this study leverages a tunnel simulation platform to investigate RIS-assisted wireless communication systems.
Qi Yang, Yating Wu, Hengkai Zhao, Yichen Feng, Yanqiong Sun, Zhou Fang, Guoxin Zheng   +6 more
doaj   +1 more source

User Clustering for STAR-RIS Assisted Full-Duplex NOMA Communication Systems

, 2023
In contrast to conventional reconfigurable intelligent surface (RIS), simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been proposed recently to enlarge the serving area from 180o to 360o coverage.
Chae, Chan-Byoung, Salem, Abdelhamid, Wong, Kai-Kit, Zhang, Yangyang   +3 more
core  

Experimental Demonstration of 3D Reflected Beamforming at sub6GHz thanks to Varactor Based Reconfigurable Intelligent Surface

, 2023
Reconfigurable intelligent surface (RIS) is a promising solution to boost coverage sustainably by reflecting waves from a transmitter to a receiver and acting as a low-power and passive relay.
Phan-Huy, Dinh-Thuy, Ratajczak, Philippe, Séguenot, Eric   +2 more
core  

Analysis of reconfigurable intelligent surface assisted networking

Dianxin kexue
Network assisted with reconfigurable intelligent surface is a kind of low-cost and low-power solution which can provide stable, continuous and ubiquitous connection to satisfy deep coverage requirements in 5G-Advanced (5G-A) and 6G era.
LIU Qiuyan, LI Bei, CAO Yanxia, YAO Saibin, JIANG Zhenwei, MO Xiaohao, WANG Yafeng   +6 more
doaj   +2 more sources

Channel-space endogenous anti-jamming method based on multi-reconfigurable intelligent surface

Tongxin xuebao, 2023
In view of the concern that the traditional anti-jamming method based on jamming recognition is challenging to defend against both the unknown and the intelligent jamming attacks, a dynamic, heterogeneous, and redundant channel-space anti-jamming ...
Yonggang ZHU, Yifu SUN, Fuqiang YAO, Cheng LI, Wenlong GUO, Kang AN   +5 more
doaj   +2 more sources

Cooperative Hierarchical Deep Reinforcement Learning based Joint Sleep, Power, and RIS Control for Energy-Efficient HetNet

, 2023
Energy efficiency (EE) is one of the most important metrics for 5G and future 6G networks to reduce energy costs and control carbon footprint. Sleep control, as a cost-efficient approach, can significantly lower power consumption by switching off network
Bavand, Majid, Elsayed, Medhat, Erol-Kantarci, Melike, Furr, Steve, Gaigalas, Raimundas, Zhou, Hao   +5 more
core  

Fairness Optimization for VLC Systems With Liquid Crystal-Based RIS-Enabled Transmitters

IEEE Photonics Journal
The application of liquid crystal (LC)-based reconfigurable intelligent surface (RIS)-assisted transmitters in visible light communication (VLC) systems can guide and amplify the light emitted by light emitting diodes (LEDs).
Xin-Yu Zhang, Jian Zhang, Qi Wu
doaj   +1 more source

On Propagation Characteristics of Reconfigurable Surface Wave Platform: Simulation and Experimental Verification

, 2023
Reconfigurable intelligent surface (RIS) as a smart reflector is revolutionizing research for next-generation wireless communications. Complementing this is a concept of using RIS as an efficient propagation medium for potentially superior path loss ...
Chae, C. B., Chan, C. H., Chu, Z., Tong, K. F., Wong, K. K.   +4 more
core  

RIS-assisted UAV communications: A review of system models, frameworks and outage performance

ICT Express
Integration of Reconfigurable Intelligent Surfaces (RIS) with Unmanned Aerial Vehicles (UAVs) generates a revolutionary paradigm for next-generation wireless communications, particularly in IoT and 6G applications.
Saddaf Rubab, Ghulam E Mustafa Abro, Hifza Mustafa, Saad Khan Baloch, Sufyan Ali Memon, Nasir Saeed   +5 more
doaj   +1 more source