Search results for "wireless"

showing 10 items of 879 documents

Economie assessments on the use of wired and wireless recharging systems in Italian and European market

2017

The conductive charging method for the electric vehicles is the most widespread, since it is the simplest and has higher returns. In the last years, alternative charging technologies have been investigated. Between these wireless charging systems have been large diffusion and have been commercialized by some manufacturer. Wireless charging systems for electric vehicles have some advantages respect the wired ones, not obliging the user to connect physically the vehicle to the electric charging station. Assuming the efficiency declared by the manufacturer of wireless systems the authors, in this paper, estimate the maximum cost that wireless recharging systems can have to be, however, more fa…

Net Present ValueComputer scienceBiomedical EngineeringEnergy Engineering and Power Technology02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciInductive chargingNet present valueMaintenance engineeringCharging stationReduction (complexity)Order (exchange)Economic indexewireless recharging systems0202 electrical engineering electronic engineering information engineeringWireless0501 psychology and cognitive sciencesRenewable Energy050107 human factorsSustainability and the Environmentbusiness.industryRenewable Energy Sustainability and the Environment05 social sciencesrecharging columns020206 networking & telecommunicationsrecharging columnefficiencywireless recharging systemeconomic indexesValue (economics)economic indexes; efficiency; Net Present Value; recharging columns; wireless recharging systems; Energy Engineering and Power Technology; Biomedical Engineering; Renewable Energy Sustainability and the EnvironmentTelecommunicationsbusiness
researchProduct

Economic analysis on the use of wired and wireless recharging systems

2017

Wireless charging systems for electric vehicles have some advantages respect the wired ones, not obliging the user to connect physically the vehicle to the electric charging station. However, at the same time, they have disadvantages linked to issues of electromagnetic compatibility and low efficiency. This study considers some scenarios for which both wired and wireless recharging systems can be adopted, with the aim of estimate the efficiency that must be guaranteed by wireless systems, so that its realization could be more favorable with respect to wired one. The estimation is developed by means of classical economic indexes, in the framework of Italian end European markets. Results repo…

Net Present ValueEngineeringEnvironmental Engineering020209 energyEnergy Engineering and Power TechnologyEfficiency02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciRecharging columnsRecharging columnNet present valueWireless recharging systemIndustrial and Manufacturing EngineeringCharging stationEconomic indexesWireless recharging systemsEconomic indexe0202 electrical engineering electronic engineering information engineeringWirelessEconomic analysisWireless systemsElectrical and Electronic Engineeringbusiness.industryElectromagnetic compatibilityEconomic indexes; Efficiency; Net Present Value; Recharging columns; Wireless recharging systems; Energy Engineering and Power Technology; Electrical and Electronic Engineering; Industrial and Manufacturing Engineering; Environmental EngineeringbusinessTelecommunicationsRealization (systems)2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
researchProduct

A CAPWAP-Compliant Solution for Radio Resource Management in Large-Scale 802.11 WLAN

2007

Recently, the impressive success of the IEEE 802.11 WLAN technology has dramatically changed the role of the wireless connectivity provisioning. Born as a wireless extension of small office or home networks, todays the WLANs are getting more and more popular as a large, even metropolitan, area networks. The deployment of large-scale WLANs has some critical issues, because of the lack of coordinated management functionalities among the network nodes. In this paper we briefly describe the CAPWAP architectural solution, for centralizing some control and maintenance functionalities in large scale WLAN, by guaranteeing the interoperability between network nodes provided by different vendors. We …

Network administratorSettore ING-INF/03 - TelecomunicazioniComputer sciencebusiness.industryWireless networkNode (networking)ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSTestbedInteroperabilityProvisioningMetropolitan areaCAPWAPFrequency allocationWireless lanResource allocationWirelessRadio resource managementCentralized signal controlInteroperability Large scale systems Radio communication Resource allocationbusinessComputer networkIEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference
researchProduct

A CAPWAP Architecture for Automatic Frequency Planning in WLAN

2007

Recently, the impressive success of the IEEE 802.11 WLAN technology has dramatically changed the role of the wireless connectivity provisioning. Born as a wireless extension of small office or home networks, todays the WLANs are getting more and more popular as a large, even metropolitan, area networks. The deployment of large-scale WLANs has some critical issues, because of the lack of coordinated management functionalities among the network nodes. In this paper we briefly describe the CAPWAP architectural solution, for centralizing some control and maintenance functionalities in large scale WLAN, by guaranteeing the interoperability between network nodes provided by different vendors. We …

Network administratorWi-Fi arrayComputer sciencebusiness.industryWireless networkSettore ING-INF/03 - TelecomunicazioniNode (networking)ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSTestbedPhysical layerLocal area networkWireless WANProvisioningCAPWAPMetropolitan areaWireless lanWirelessAutomatic frequency Control operations Critical issues Home networks IEEE 802.11 WLAN International symposiumbusinessHeterogeneous networkMunicipal wireless networkComputer network
researchProduct

A real-time network architecture for biometric data delivery in Ambient Intelligence

2012

Ambient Intelligent applications involve the deployment of sensors and hardware devices into an intelligent environment surrounding people, meeting users’ requirements and anticipating their needs (Ambi- ent Intelligence-AmI). Biometrics plays a key role in surveillance and security applications. Fingerprint, iris and voice/speech traits can be acquired by contact, contact-less, and at-a-distance sensors embedded in the environment. Biometric traits transmission and delivery is very critical and it needs real-time transmission net- work with guaranteed performance and QoS. Wireless networks become suitable for AmI if they are able to satisfy real-time communication and security system requi…

Network architectureAmbient intelligenceGeneral Computer ScienceBiometricsbusiness.industryComputer scienceWireless networkQuality of serviceComputational intelligenceAutomationAmbient Intelligence Efficient wireless sensor networks Real-time scheduling Biometric traits processingSoftware deploymentEmbedded systemWirelessIntelligent environmentbusinessJournal of Ambient Intelligence and Humanized Computing
researchProduct

A Heterogeneous Sensor and Actuator Network Architecture for Ambient Intelligence

2014

One of the most important characteristics of a typical ambient intelligence scenario is the presence of a number of sensors and actuators that capture information about user preferences and activities. Such nodes, i.e., sensors and actuators, are often based on different technologies so that types of networks which are typically different coexist in a real system, for example, in a home or a building. In this chapter we present a heterogeneous sensor and actuator network architecture designed to separate network management issues from higher, intelligent layers. The effectiveness of the solution proposed here was evaluated using an experimental scenario involving the monitoring of an office…

Network architectureAmbient intelligenceGeographic information systemAmbient IntelligenceComputer sciencebusiness.industryReal-time computingNetwork managementSensor nodeEmbedded systemWireless Sensor NetworksActuatorbusinessWireless sensor network
researchProduct

Improving the Performance Metric of Wireless Sensor Networks with Clustering Markov Chain Model and Multilevel Fusion

2013

Published version of an article in the journal: Mathematical Problems in Engineering. Also available from the publisher at: http://dx.doi.org/10.1155/2013/783543 Open access The paper proposes a performance metric evaluation for a distributed detection wireless sensor network with respect to IEEE 802.15.4 standard. A distributed detection scheme is considered with presence of the fusion node and organized sensors into the clustering and non-clustering networks. Sensors are distributed in clusters uniformly and nonuniformly and network has multilevel fusion centers. Fusion centers act as heads of clusters for decision making based on majority-like received signal strength (RSS) with comparis…

Network architectureArticle SubjectMarkov chainComputer scienceNetwork packetlcsh:MathematicsGeneral MathematicsNode (networking)ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSReal-time computingGeneral EngineeringThroughputlcsh:QA1-939VDP::Mathematics and natural science: 400::Information and communication science: 420::Knowledge based systems: 425lcsh:TA1-2040Channel state informationVDP::Technology: 500::Information and communication technology: 550::Telecommunication: 552Computer Science::Networking and Internet Architecturelcsh:Engineering (General). Civil engineering (General)Cluster analysisPerformance metricWireless sensor networkComputer Science::Information TheoryRayleigh fadingMathematical Problems in Engineering
researchProduct

A Logical Framework for Augmented Simulations of Wireless Sensor Networks

2006

This paper describes a framework for practical and efficient monitoring of a wireless sensor network. The architecture proposed exploits the dynamic reasoning capabilities of the situation calculus in order to assess the sensor network behavior before actually deploying all the nodes. Designing a wireless sensor network for a specific application typically involves a preliminary phase of simulations that rely on specialized software, whose behavior does not necessarily reproduce what will be experienced by an actual network. On the other hand, delaying the test phase until deployment may not be advisable due to unreasonable costs. This paper suggests the adoption of a hybrid approach that i…

Network architectureWi-Fi arrayVisual sensor networkbusiness.industryService setWireless networkComputer scienceWireless ad hoc networkDistributed computingWSNSensor webNetwork simulationIntelligent computer networkKey distribution in wireless sensor networksWireless site surveyMobile wireless sensor networkbusinessWireless sensor networkNetwork management stationHeterogeneous networkComputer network
researchProduct

Wireless versus Wired Network-on-Chip to Enable the Multi- Tenant Multi-FPGAs in Cloud

2021

The new era of computing is not CPU-centric but enriched with all the heterogeneous computing resources including the reconfigurable fabric. In multi-FPGA architecture, either deployed within a data center or as a standalone model, inter-FPGA communication is crucial. Network-on-chip exhibits a promising performance for the integration of one FPGA. A sustainable communication architecture requires stable performance as the number of applications or users grows. Wireless network-on-chip has the potential to be that communication architecture, as it boasts the same performance capability as wired solutions in addition to its multicast capacities. We conducted an exploratory study to investiga…

Network on a chipMulticastComputer architecturebusiness.industryComputer scienceWirelessSymmetric multiprocessor systemData centerCloud computingArchitecturebusinessField-programmable gate array2021 IEEE International IOT, Electronics and Mechatronics Conference (IEMTRONICS)
researchProduct

Graph Filtering with Quantization over Random Time-varying Graphs

2019

Distributed graph filters can be implemented over wireless sensor networks by means of cooperation and exchanges among nodes. However, in practice, the performance of such graph filters is deeply affected by the quantization errors that are accumulated when the messages are transmitted. The latter is paramount to overcome the limitations in terms of bandwidth and computation capabilities in sensor nodes. In addition to quantization errors, distributed graph filters are also affected by random packet losses due to interferences and background noise, leading to the degradation of the performance in terms of the filtering accuracy. In this work, we consider the problem of designing graph filte…

Network packetComputer scienceComputationQuantization (signal processing)020206 networking & telecommunications010103 numerical & computational mathematics02 engineering and technologyNetwork topology01 natural sciencesGraphBackground noise0202 electrical engineering electronic engineering information engineering0101 mathematicsWireless sensor networkAlgorithm2019 IEEE Global Conference on Signal and Information Processing (GlobalSIP)
researchProduct