Results 41 to 50 of about 3,003 (240)
IEEE Access, 2020 Reconfigurable intelligent surface (RIS) is considered to be an energy-efficient approach to reshape the wireless environment for improved throughput. Its passive feature greatly reduces the energy consumption, which makes RIS a promising technique for ...
Keke Ying +5 more
doaj +1 more source
Design of Near-Field Beamforming for Large Intelligent Surfaces
IEEE Transactions on Wireless Communications, 2022 In this paper, we propose a novel three-dimensional (3D) near-field beamforming (BF) design for Large Intelligent Surface (LIS). We firstly investigate the definitions of near-field and far-field of LIS, and derive the Fresnel near-field region where amplitudes variations are negligible and only phase variations worsen the harvested array-gains.
Sha Hu 0001 +2 more
openaire +1 more source
Real-Time Implementation Aspects of Large Intelligent Surfaces [PDF]
ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2020 With the potential to provide a clean break from massive multiple-input multiple-output, large intelligent surfaces (LISs) have recently received a thrust of research interest. Various proposals have been made in the literature to define the exact functionality of LISs, ranging from fully active to largely passive solutions.
Harsh Tataria +2 more
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Federated learning enables intelligent reflecting surface in fog-cloud enabled cellular network [PDF]
PeerJ Computer Science, 2021 The intelligent reflecting surface (IRS) is a ground-breaking technology that can boost the efficiency of wireless data transmission systems. Specifically, the wireless signal transmitting environment is reconfigured by adjusting a large number of small ...
Abdullah Lakhan +5 more
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The Intelligent Control System and Experiments for an Unmanned Wave Glider. [PDF]
PLoS ONE, 2016 The control system designing of Unmanned Wave Glider (UWG) is challenging since the control system is weak maneuvering, large time-lag and large disturbance, which is difficult to establish accurate mathematical model.
Yulei Liao +4 more
doaj +1 more source
Intelligent sampling for the measurement of structured surfaces [PDF]
, 2012 Uniform sampling in metrology has known drawbacks such as coherent spectral aliasing and a lack of efficiency in terms of measuring time and data storage.
Wang, Jian +9 more
core +1 more source
Covert communication in relay and RIS networks
Security and Safety, 2023 Covert communication aims to prevent the warden from detecting the presence of communications, i.e. with a negligible detection probability. When the distance between the transmitter and the legitimate receiver is large, large transmission power is ...
Hu Jinsong +4 more
doaj +1 more source
Communicating With Large Intelligent Surfaces: Fundamental Limits and Models [PDF]
IEEE Journal on Selected Areas in Communications, 2020 Presented in part at thge IEEE International Conference on Communications (ICC), 2020. In publication on IEEE Journal on Selected Areas in Communications, Special issue on Wireless Networks Empowered by Reconfigurable Intelligent Surfaces, 2020 (IEEE JSAC, Nov 2020)
openaire +3 more sources
Hybrid Relay-Reflecting Intelligent Surface-Assisted Wireless Communications [PDF]
, 2022 Reconfigurable intelligent surface (RIS) has emerged as a cost- and energy-efficient solution to enhance the wireless communications capacity. However, recent studies show that a very large surface is required for a RIS-assisted communications system ...
Vu, Quang-Doanh +3 more
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Channel Estimation for Large Intelligent Surface-Based Transceiver Using a Parametric Channel Model [PDF]
, 2021 Large intelligent surface-based transceivers (LISBTs), in which a spatially continuous surface is being used for signal transmission and reception, have emerged as a promising solution for improving the coverage and data rate of wireless communication ...
mojtaba ghermezcheshmeh (11792051) +3 more
core +1 more source