Search results for "micro-cell"

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Etude des effets cohérents dans la vapeur de rubidium atomique sous irradiation laser bi-chromatique

2013

The effect of electromagnetically induced transparency is observed, using nanocelland microcell. The EIT-resonance with good parameters (high contrast and small FWHM) is obtained in thick cells. The EIT-resonance splitting in magnetic field is observed for the cases of D1-line of 85Rb and 85Rb. The theoretical model, explaining the EIT-resonance components frequency shift dependence on magnetic field strength is presented. The theoretical and experimental results are compared and good agreement is shown. Also the EIT-resonance behavior in hyperfine Paschen-Back regime is presented and explained. For the first time the N-type resonance in microcell is observed. Good parameters of theN-type r…

Gaz tamponEIT-resonanceΛ-systemHyperfine Paschen-Back regime[PHYS.COND.CM-GEN] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]High resolution spectroscopyN-type resonanceRb hyperfine structureMicrocellRésonance EITSystème ΛStructure hyperfine RbCellules multi-régions combinées[ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Zeeman effectDiode laserNano-cellulesEffet ZeemanRésonance NMicro-cellulesCombined multi-region cells[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Buffer gasNanocellRégime hyperfin Paschen-BackSpectroscopie à haute résolution
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Two Teletraffic-based Schemes for Energy Saving in Cellular Networks with Micro-cells

2012

Published version of an article in the journal: Journal of Communications. Also available from the publisher at: http://dx.doi.org/10.4304/jcm.7.10.726-739 Open access The energy consumption of Base Stations (BSs) is known to constitute a major part of the power consumption in a cellular network. In this paper, we propose a novel approach which may switch a BS off under light traffic conditions in order to conserve the power consumption of such networks. More specifically, when the traffic load in the middle cell of a network with three micro-cells is sufficiently low, the corresponding BS can be switched off and its users will be covered by increasing the transmission power of one sector a…

Micro cellteletrafficMarkov chainComputer sciencebusiness.industryMarkov chainPower savingmicro-cellpower savingFMDPVDP::Technology: 500::Information and communication technology: 550::Telecommunication: 552Cellular networkElectrical and Electronic EngineeringbusinessTelecommunicationsoptimizationEnergy (signal processing)energyBSComputer networkJournal of Communications
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