Results 31 to 40 of about 1,078,856 (288)

Information-Theoretic Analysis of an Energy Harvesting Communication System [PDF]

open access: yes, 2010
In energy harvesting communication systems, an exogenous recharge process supplies energy for the data transmission and arriving energy can be buffered in a battery before consumption. Transmission is interrupted if there is not sufficient energy.
Ozel, Omur, Ulukus, Sennur
core   +1 more source

Maximum Power Flow Analysis of Simultaneous AC-DC Power Transmission System

open access: yes, 2019
Le système CA-CC simultané peut être utilisé pour augmenter la capacité de flux de puissance du système de transmission CA existant. La présente analyse montre que le système CA-CC simultané peut fonctionner à un angle de transmission plus grand par rapport au système CA pur.
Mohammad Tawhidul Alam   +2 more
openaire   +1 more source

Design and Optimal Configuration of Full-Duplex MAC Protocol for Cognitive Radio Networks Considering Self-Interference [PDF]

open access: yes, 2015
In this paper, we propose an adaptive Medium Access Control (MAC) protocol for full-duplex (FD) cognitive radio networks in which FD secondary users (SUs) perform channel contention followed by concurrent spectrum sensing and transmission, and ...
Le, Long Bao, Tan, Le Thanh
core   +2 more sources

Accurate Maximum Power Tracking of Wireless Power Transfer System Based on Simulated Annealing Algorithm

open access: yesIEEE Access, 2018
Wireless power transfer (WPT) technology has become a popular solution to battery charging of mobile equipment. However, the variation of the load power will affect the transmission capacity of the system, which might make the electrical load cannot gain
Zhongzheng Lin   +5 more
doaj   +1 more source

Research on load adaptive impedance matching of magnetic resonant wireless power transfer system

open access: yesGong-kuang zidonghua, 2020
In view of problem that current impedance matching methods ca't automatically adjust load impedance of magnetic resonant wireless power transfer system(MR-WPT) when load changes, which leads to reduction of energy transfer efficiency of the system, a ...
BAI Jingcai   +3 more
doaj   +1 more source

Obtaining the maximum power from the source using step-up and step-down type pulse regulators that work on battery

open access: yesElectrical engineering & Electromechanics
Introduction. Pulse regulators are widely used to match the output resistance of the source with the load resistance in order to ensure the possibility of taking maximum power when the value of the load resistance changes. Problem.
V. Y. Romashko   +2 more
doaj   +1 more source

Energy-Efficient Antenna Selection and Power Allocation for Large-Scale Multiple Antenna Systems with Hybrid Energy Supply [PDF]

open access: yes, 2014
The combination of energy harvesting and large-scale multiple antenna technologies provides a promising solution for improving the energy efficiency (EE) by exploiting renewable energy sources and reducing the transmission power per user and per antenna.
Gong, Jie   +3 more
core   +1 more source

Maximum Wireless Power Transmission Using Real-Time Single Iteration Adaptive Impedance Matching

open access: yesIEEE Transactions on Circuits and Systems I: Regular Papers, 2023
Wireless power transfer (WPT) systems’ efficiency is significantly impacted by non-monotonic variations in the coupling coefficient. For very short distances or strong-coupling cases, the WPT efficiency is minimal at the natural resonant frequency, with two peaks around this frequency, known as the frequency splitting phenomenon. On the other hand, WPT
Fatemeh Nasr Esfahani   +3 more
openaire   +2 more sources

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Test results of resonant single wire system transmitting power to the infrastructure objects of the JSC “RZD”

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2018
The paper provides test results of pilot sample of resonant single wire transmission system to a distance of 2000 m at a higher frequency. Cable power lines used as the power line based on coaxial cable.
D. V. Ermolenko   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy