Results 51 to 60 of about 1,194,102 (193)

Development of DC–DC Converters for Fuel-Cell Hybrid Power Systems in a Lift–Cruise Unmanned Aerial Vehicle

open access: yesEnergies
Lift–cruise-type unmanned aerial vehicles (UAVs) powered by hydrogen fuel cells often integrate secondary energy storage devices to improve responsiveness to load fluctuations during different flight phases, which necessitates an efficient energy ...
Min-Gwan Gwon   +2 more
doaj   +1 more source

Analysis of Quantum Linear Systems' Response to Multi-photon States

open access: yes, 2013
The purpose of this paper is to present a mathematical framework for analyzing the response of quantum linear systems driven by multi-photon states. Both the factorizable (namely, no correlation among the photons in the channel) and unfactorizable multi ...
Zhang, Guofeng
core   +1 more source

Unmanned Aerial Vehicle Attitude Control Using L1 Adaptive Controller

open access: yesIEEE Access, 2021
$L_{1}$ adaptive controllers are proposed to control fixed-wing unmanned aerial vehicle attitude for both longitudinal and lateral motions simultaneously.
Mohamed Hussien   +3 more
doaj   +1 more source

he Study and Analysis of Effect of Multi-Antenna Techniques on LTE network with Different Bandwidth Configurations in the Downlink [PDF]

open access: yes, 2014
Long Term Evolution (LTE) system adapts advanced Multiple Input Multiple Output (MIMO) antenna techniques on both uplink and downlink to achieve high peak data rates and higher system throughput. This enables LTE to support multimedia applications beyond
Devaraju, J.T.   +3 more
core  

Ant-colony-based multiuser detection for multifunctional-antenna-array-assisted MC DS-CDMA systems

open access: yes, 2008
A novel Ant Colony Optimization (ACO) based Multi-User Detector (MUD) is designed for the synchronous Multi-Functional Antenna Array (MFAA) assisted Multi-Carrier Direct-Sequence Code-Division Multiple-Access (MC DS-CDMA) uplink (UL), which supports both
Hanzo, L., Hu, B., Xu, C., Yang, L-L.
core   +1 more source

Realization of a 10 kW MES power to methane plant based on unified AC/DC converter [PDF]

open access: yes, 2018
This paper presents a galvanic isolated multi output AC/DC topology that is suitable for Microbial electrosynthesis (MES) based Power to Methane energy storage systems.
Bosch, Pau   +4 more
core   +1 more source

A scalable hardware and software control apparatus for experiments with hybrid quantum systems [PDF]

open access: yes, 2018
Modern experiments with fundamental quantum systems - like ultracold atoms, trapped ions, single photons - are managed by a control system formed by a number of input/output electronic channels governed by a computer. In hybrid quantum systems, where two
Calosso, Claudio E.   +5 more
core   +2 more sources

Multi-Boson Correlation Sampling

open access: yes, 2015
We give a full description of the problem of Multi-Boson Correlation Sampling (MBCS) at the output of a random interferometer for single input photons in arbitrary multimode pure states.
Laibacher, Simon, Tamma, Vincenzo
core   +1 more source

Effect of Environmental Parameters on the Performance of Optical Wireless Communications

open access: yesInternational Journal of Optics, 2019
Free space optical communication systems are the future of the communication systems which can meet the needs of the end users who are demanding high bandwidths to support high-speed communication.
Hosam Abd Elrazek Mohamed Ali   +2 more
doaj   +1 more source

Time-sharing power supply full-bridge buck mode dual-input DC-DC converter

open access: yesDianzi Jishu Yingyong, 2020
In the distributed generation system with multiple new energy joint supply, using a multi-input DC-DC converter instead of multiple single input DC-DC converters can simplify the circuit structure and reduce the cost.
Li Zhaoqin, Chen Daolian
doaj   +1 more source

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