Results 31 to 40 of about 126,874 (155)

Simulation Studies of Link Group in Elastic Optical Networks Used in Internet of Things Solutions

open access: yesTransport and Telecommunication, 2023
The elastic optical network (EON) solution is the most flexible in terms of allocation of resources for various traffic streams transported in core part (edge-cloud) of Internet of Things (IoT) networks.
Głąbowski Mariusz, Sobieraj Maciej
doaj   +1 more source

Performance Analysis of Massive MIMO for Cell-Boundary Users

open access: yes, 2015
In this paper, we consider massive multiple-input multiple-output (MIMO) systems for both downlink and uplink scenarios, where three radio units (RUs) connected via one digital unit (DU) support multiple user equipments (UEs) at the cell-boundary through
Caire, Giuseppe   +2 more
core   +1 more source

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

open access: yesIEEE Access, 2020
Energy harvesting (EH) or scavenging is recognized as harvesting energy from ambient energy sources in the surrounding environment. This paper reports a literature review on radio frequency (RF) EH using different metasurface/metamaterial structures ...
Abdulrahman Ahmed Ghaleb Amer   +4 more
doaj   +1 more source

Wideband, Low-Profile, Dual-Polarized Slot Antenna with an AMC Surface for Wireless Communications

open access: yesInternational Journal of Antennas and Propagation, 2016
A wideband dual-polarized slot antenna loaded with artificial magnetic conductor (AMC) is proposed for WLAN/WIMAX and LTE applications. The slot antenna mainly consists of two pairs of arrow-shaped slots along the diagonals of the square patch.
Wei Hu   +3 more
doaj   +1 more source

Design of an ultra-wideband energy harvesting rectifier antenna

open access: yesDianzi Jishu Yingyong, 2022
In order to make better use of RF energy of space radio waves, a broadband antenna covering resonant frequency from 1 to 14 GHz is designed, and a rectified antenna is designed for 2.4 GHz. The main part of the antenna is a circular patch.
Xue Liang, Bai Xue, Xu Leijun
doaj   +1 more source

Online Reinforcement Learning for Dynamic Multimedia Systems

open access: yes, 2009
In our previous work, we proposed a systematic cross-layer framework for dynamic multimedia systems, which allows each layer to make autonomous and foresighted decisions that maximize the system's long-term performance, while meeting the application's ...
Mastronarde, Nicholas   +1 more
core   +1 more source

Efficiency of evanescent excitation and collection of spontaneous Raman scattering near high index contrast channel waveguides [PDF]

open access: yes, 2015
info:eu-repo/semantics ...
Baets, Roel   +6 more
core   +1 more source

Gradient Index Metamaterial Based on Slot Elements

open access: yes, 2010
We present a gradient-index (GRIN) metamaterial based on an array of annular slots. The structure allows a large variation of the effective refractive index under normal-to-plane incidence and thus enables the construction of GRIN devices consisting of ...
Beigang, Rene   +4 more
core   +1 more source

The Slot in the System: An empirical case study of the entrenchment of a construct

open access: yesLexis: Journal in English Lexicology
In Construction Grammar, many units are depicted as semi-schematic objects, with a fixed part and a slot to be filled by another language unit, leading to the utterance of a construct.
Quentin Feltgen
doaj   +1 more source

Radiation Characteristic Improvement of X-Band Slot Antenna Using New Multiband Frequency-Selective Surface

open access: yesInternational Journal of Antennas and Propagation, 2014
A new configuration of frequency-selective surfaces (FSSs) is designed and presented with multiresonance characteristics which covers all of the frequency domain of X-band from 8 to 12 GHz.
Elham Moharamzadeh
doaj   +1 more source

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