Search results for "multiplexing"

showing 10 items of 179 documents

Multi-level optimization of a fiber transmission system via nonlinearity management

2006

Nonlinearity management is explored as a complete tool to obtain maximum transmission reach in a WDM fiber transmission system, making it possible to optimize multiple system parameters, including optimal dispersion pre-compensation, with fast simulations based on the continuous-wave approximation. © 2006 Optical Society of America.

Computer sciencePhysics::OpticsPolarization-maintaining optical fiber02 engineering and technology01 natural sciencesGraded-index fiber[PHYS.PHYS.PHYS-AO-PH] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]010309 optics020210 optoelectronics & photonicsOpticsWavelength-division multiplexing0103 physical sciencesDispersion (optics)0202 electrical engineering electronic engineering information engineeringFiber optic splitterDispersion-shifted fiberSpontaneous emissionPlastic optical fiber[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]Mode volumecomputer simulation; nonlinear control systems; optimizationbusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSSingle-mode optical fiberNonlinear opticsTransmission systemAtomic and Molecular Physics and OpticsFiber-optic communication[ PHYS.PHYS.PHYS-AO-PH ] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]Raman amplifiersTransmission (telecommunications)Fiber optic sensorbusiness
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Performance Comparison of Duobinary Modulation Formats for 40 Gb/s Long-Haul WDM Transmissions

2006

With their compact spectrum and high tolerance to residual chromatic dispersion, duobinary formats are attractive for the deployment of 40 Gb/s technology on 10 Gb/s WDM Long-Haul transmission infrastructures. Here, we compare the robustness of various duobinary formats when facing 40 Gb/s transmission impairments.

Computer scienceRobustness (computer science)Performance comparisonOptical cross-connectWavelength-division multiplexingBandwidth (signal processing)Electronic engineeringOptical modulation amplitudeOptical performance monitoringOptical filter2006 European Conference on Optical Communications
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Live demonstration: multiplexing AER asynchronous channels over LVDS Links with Flow-Control and Clock-Correction for Scalable Neuromorphic Systems

2017

Paper presented at the 2017 IEEE International Symposium on Circuits and Systems (ISCAS), held in Baltimore, MD, USA, on 28-31 May 2017.

Computer scienceSerial communicationGabor filters02 engineering and technologyMultiplexingMultiplexing0202 electrical engineering electronic engineering information engineeringComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMSField-programmable gate arrayComputer Science::Operating SystemsMassively parallelNeuromorphicsReal-time systemsSpiking neural networkQuantitative Biology::Neurons and CognitionArtificial neural networkbusiness.industry020208 electrical & electronic engineeringField programmable gate arraysNeuromorphic engineeringAsynchronous communicationEmbedded systemVoltage controlbusinessComputer hardwareNeural networksHardware_LOGICDESIGN
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Multilevel system optimisation via nonlinearity management

2006

Nonlinearity management is explored as a multilevel tool to obtain maximum transmission reach in a WDM system. A technique for the fast calculation of the optimal dispersion pre-compensation in systems with distributed amplification is proposed.

Computer sciencebusiness.industryNoise (signal processing)Distributed amplifierNonlinear optics02 engineering and technology01 natural sciences010309 opticsNonlinear system020210 optoelectronics & photonicsOpticsSignal-to-noise ratioTransmission (telecommunications)Wavelength-division multiplexing0103 physical sciencesDispersion (optics)0202 electrical engineering electronic engineering information engineeringElectronic engineeringbusinessComputingMilieux_MISCELLANEOUS
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Energy-Efficient Binary Power Control with Bit Error Rate Constraint in MIMO-OFDM Wireless Communication Systems

2012

Motivated by the demand for energy efficiency improvement in mobile communication industry, we explore an idea of optimizing energy efficiency for MIMO-OFDM wireless communication systems while maintaining users' quality of service (QoS) requirement. Based on the binary power control scheme,a power allocation criterion for energy efficiency optimization is derived under the total power constraint. From a bit error rate (BER) point of view, a protection constraint is configured to guarantee the system QoS. With the aim of energy efficiency optimization under QoS guarantee in MIMO-OFDM wireless communication systems, an energy-efficient binary power control with BER constraint (EBPCB) algorith…

Computer sciencebusiness.industryOrthogonal frequency-division multiplexingQuality of serviceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSMIMO-OFDMComputer Science::PerformanceConstraint (information theory)Computer Science::Networking and Internet ArchitectureBit error rateElectronic engineeringMobile telephonybusinessComputer Science::Information TheoryEfficient energy usePower control2012 IEEE Vehicular Technology Conference (VTC Fall)
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A New Coupling Solution for G3-PLC Employment in MV Smart Grids

2019

This paper proposes a new coupling solution for transmitting narrowband multicarrier power line communication (PLC) signals over medium voltage (MV) power lines. The proposed system is based on an innovative PLC coupling principle, patented by the authors, which exploits the capacitive divider embedded in voltage detecting systems (VDS) already installed inside the MV switchboard. Thus, no dedicated couplers have to be installed and no switchboard modifications or energy interruptions are needed. This allows a significant cost reduction of MV PLC implementation. A first prototype of the proposed coupling system was presented in previous papers: it had a 15 kHz bandwidth useful to couple sin…

Control and Optimizationpower system measurementComputer scienceOrthogonal frequency-division multiplexingEnergy Engineering and Power Technologylcsh:Technologypower system communicationNarrowbandsmart gridsElectrical and Electronic EngineeringCenter frequencysmart gridEngineering (miscellaneous)Renewable Energy Sustainability and the Environmentbusiness.industrylcsh:TBandwidth (signal processing)Electrical engineeringpower system measurementsnarrow band power line communicationPower-line communicationElectric power transmissionSmart gridModulationcommunication system performanceICT infrastructure for smart gridbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheEnergy (miscellaneous)VoltageEnergies
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Fast Response Vibration Sensor Based on Bragg Gratings Written on Tapered Core Fibers

2006

Bragg gratings written in tapered core fibers are used to measure mechanical vibrations with a time response better than 10 μs. The system is compact, low-cost and can be wavelength multiplexed.

Core (optical fiber)VibrationPHOSFOSLight intensityVibration sensorWavelengthMaterials scienceOpticsFiber optic sensorbusiness.industryPhysics::OpticsbusinessMultiplexingOptical Fiber Sensors
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The focal plane assembly for the Athena X-ray Integral Field Unit instrument

2016

This paper summarizes a preliminary design concept for the focal plane assembly of the X-ray Integral Field Unit on the Athena spacecraft, an imaging microcalorimeter that will enable high spectral resolution imaging and point-source spectroscopy. The instrument's sensor array will be a ~ 3840-pixel transition edge sensor (TES) microcalorimeter array, with a frequency domain multiplexed SQUID readout system allowing this large-format sensor array to be operated within the thermal constraints of the instrument's cryogenic system. A second TES detector will be operated in close proximity to the sensor array to detect cosmic rays and secondary particles passing through the sensor array for off…

CryostatPhysics::Instrumentation and DetectorsAperture01 natural sciencesfrequency division multiplexingfocal plane assemblySettore FIS/05 - Astronomia E AstrofisicaOpticsSensor array0103 physical sciencesElectronicSQUID amplifierAthenaOptical and Magnetic MaterialsElectrical and Electronic Engineeringta216010306 general physicsta113010302 applied physicsPhysicsX-IFUta114ta213business.industryStray lightApplied Mathematicstransition edge sensorDetectorAstrophysics::Instrumentation and Methods for AstrophysicsX-ray microcalorimeterComputer Science Applications1707 Computer Vision and Pattern RecognitionCondensed Matter PhysicsCardinal pointElectromagnetic shieldingcryogenic anti-coincidence detectorX-ray microcalorimeter transition edge sensor cryogenic anti-coincidence detector SQUID amplifier frequency division multiplexing Athena X-IFU focal plane assemblyTransition edge sensorbusinessAthena; cryogenic anti-coincidence detector; focal plane assembly; frequency division multiplexing; SQUID amplifier; transition edge sensor; X-IFU; X-ray microcalorimeter; Electronic Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications1707 Computer Vision and Pattern Recognition; Applied Mathematics; Electrical and Electronic EngineeringSPIE Proceedings
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WDM switching employing a hybrid silicon-plasmonic A-MZI

2012

We demonstrate a system-level evaluation of an A-MZI with 60μm long DLSPP active branches exhibiting more than 14dB extinction ratio. Error-free switching operation is achieved for a 4×10Gb/s incoming WDM data stream with only 13.1mW power consumption.

Data streamAmplified spontaneous emissionMaterials scienceSiliconchemistryExtinction ratioWavelength-division multiplexingSurface plasmonPolaritonElectronic engineeringchemistry.chemical_elementPlasmon
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Wavelength-compensated time-sequential multiplexed color joint transform correlator

2010

We report a wavelength-compensated three-channel (RGB) joint transform correlator (JTC) for color pattern recognition using a ferroelectric liquid-crystal spatial light modulator (SLM) operating in binary pure phase modulation. We apply a previously reported time-multiplexing technique useful in creating wavelength-compensated diffraction patterns, based on the synchronization of properly scaled diffraction masks with the input wavelength selection obtained by applying a rotating RGB color-filter wheel to an Ar-Kr laser. The application of this technique to a JTC architecture permits real-time color object detection. In order to achieve a high light efficiency for the correlation process, w…

DiffractionChannel (digital image)Computer scienceMaterials Science (miscellaneous)ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONColorPhysics::OpticsMultiplexingIndustrial and Manufacturing EngineeringSpectral linePattern Recognition Automatedlaw.inventionOpticslawImage Processing Computer-AssistedComputer SimulationBusiness and International ManagementComputingMethodologies_COMPUTERGRAPHICSSpatial light modulatorbusiness.industryLasersSpectrum AnalysisLaserObject detectionLiquid CrystalsLiquid crystal on siliconRGB color modelbusinessPhase modulationApplied Optics
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