Search results for "Wireless sensor networks"

showing 10 items of 159 documents

Adaptive consensus-based distributed detection in WSN with unreliable links

2016

Event detection is a crucial tasks in wireless sensor networks. The importance of a fast response makes distributed strategies, where nodes exchange information just with their one-hop neighbors to reach local decisions, more adequate than schemes where all nodes send observations to a central entity. Distributed detectors are usually based on average consensus, where all nodes iteratively communicate to asymptotically agree on a final result. In a realistic scenario, communications are subject to random failures, which impacts the performance of the consensus. We propose an alternative detector, which adapts to the statistical properties of the consensus and compensate deviations from the …

0209 industrial biotechnologyEvent (computing)business.industryComputer scienceDistributed computingDetector020206 networking & telecommunications02 engineering and technologyKey distribution in wireless sensor networks020901 industrial engineering & automation0202 electrical engineering electronic engineering information engineeringbusinessWireless sensor networkComputer network2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
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Reliable diagnostics using wireless sensor networks

2019

International audience; Monitoring activities in industry may require the use of wireless sensor networks, for instance due to difficult access or hostile environment. But it is well known that this type of networks has various limitations like the amount of disposable energy. Indeed, once a sensor node exhausts its resources, it will be dropped from the network, stopping so to forward information about maybe relevant features towards the sink. This will result in broken links and data loss which impacts the diagnostic accuracy at the sink level. It is therefore important to keep the network's monitoring service as long as possible by preserving the energy held by the nodes. As packet trans…

0209 industrial biotechnologyGeneral Computer ScienceComputer science[INFO.INFO-DS]Computer Science [cs]/Data Structures and Algorithms [cs.DS]02 engineering and technologyData loss[INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE]Network topology[SPI.AUTO]Engineering Sciences [physics]/Automatic[INFO.INFO-IU]Computer Science [cs]/Ubiquitous ComputingPrognostics and health management[INFO.INFO-CR]Computer Science [cs]/Cryptography and Security [cs.CR]020901 industrial engineering & automation0202 electrical engineering electronic engineering information engineeringAdaBoostElectroniquebusiness.industryNetwork packetGeneral Engineering[INFO.INFO-MO]Computer Science [cs]/Modeling and SimulationWireless sensor networksRandom forest[SPI.TRON]Engineering Sciences [physics]/Electronics[INFO.INFO-MA]Computer Science [cs]/Multiagent Systems [cs.MA]Sensor node020201 artificial intelligence & image processing[INFO.INFO-ET]Computer Science [cs]/Emerging Technologies [cs.ET]Gradient boosting[INFO.INFO-DC]Computer Science [cs]/Distributed Parallel and Cluster Computing [cs.DC]businessWireless sensor networkComputer networkComputers in Industry
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Two novel subjective logic-based in-network data processing schemes in wireless sensor networks

2016

Wireless sensor networks (WSNs) consist of connected low-cost and small-size sensor nodes. The sensor nodes are characterized by various limitations, such as energy availability, processing power, and storage capacity. Typically, nodes collect data from an environment and transmit the raw or processed data to a sink. However, the collected data contains often redundant information. An in-network processing scheme attempts to eliminate or reduce such redundancy in sensed data. In this paper, we propose two in-network data processing schemes for WSNs, which are built based on a lightweight algebra for data processing. The schemes bring also benefits like decreased network traffic load and inc…

021110 strategic defence & security studiesData processingbusiness.industryComputer scienceVisual sensor networkReal-time computing0211 other engineering and technologies020206 networking & telecommunications02 engineering and technologySynthetic dataKey distribution in wireless sensor networks0202 electrical engineering electronic engineering information engineeringMobile wireless sensor networkWirelessbusinessSubjective logicWireless sensor network2016 IEEE 12th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
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Radio environment map estimation based on communication cost modeling for heterogeneous networks

2017

Los mapas del entorno radioeléctrico pueden ser una poderosa herramienta para lograr una asignación de recursos eficiente y consciente del contexto en las redes heterogéneas 5G. En este trabajo, consideramos una red heterogénea formada por una red celular tradicional y una red de sensores inalámbricos. El papel de la red de sensores inalámbricos es estimar el mapa del entorno radioeléctrico de la célula utilizando una técnica de interpolación geoestadística denominada Kriging. En un trabajo anterior se propuso un algoritmo de agrupación distribuida de sensores para reducir la complejidad de la estimación. En nuestra contribución, el proceso de formación de clústeres se modifica para incluir…

:CIENCIAS TECNOLÓGICAS [UNESCO]Computer scienceReal-time computing020302 automobile design & engineering020206 networking & telecommunications02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASradio environment maps0203 mechanical engineeringMetric (mathematics)0202 electrical engineering electronic engineering information engineeringCellular networkResource allocationcommunication costkrigingCluster analysiswireless sensor networksWireless sensor networkHeterogeneous network5GInterpolation
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Distributed Clustering Algorithm for Spatial Field Reconstruction in Wireless Sensor Networks

2015

En este trabajo, consideramos el problema de la estimación espacial distribuida para la reconstrucción del campo radio en redes de sensores inalámbricos. Para estimar el campo, se utiliza una técnica geoestadística llamada kriging. La estimación espacial centralizada con un gran número de sensores conllevan un elevado coste computacional y gasto de energía. Presentamos un novedoso algoritmo de clustering distribuido para estimar mapas de interferencia espacial, que son esenciales para las operaciones y la gestión de las futuras redes inalámbricas. En este algoritmo, los clústeres de sensores se forman de forma adaptativa mediante la minimización de la varianza de kriging. El cálculo del sem…

:CIENCIAS TECNOLÓGICAS [UNESCO]Computer scienceWireless networkComputationUNESCO::CIENCIAS TECNOLÓGICAScomputer.software_genreField (geography)Krigingspatial field reconstructionkrigingData miningwireless sensor networksCluster analysisVariogramWireless sensor networkcomputerEnergy (signal processing)clustering2015 IEEE 81st Vehicular Technology Conference (VTC Spring)
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A low complexity distributed cluster based algorithm for spatial prediction

2017

Los mapas del entorno radioeléctrico (REM) pueden ser una herramienta esencial para numerosas aplicaciones en las futuras redes inalámbricas 5G. En este trabajo, empleamos un popular método geoestadístico llamado kriging ordinario para estimar el REM de un área cubierta por un eNodeB equipado con múltiples antenas. Los sensores inalámbricos se distribuyen por el área de interés y se organizan clústeres adaptativos de sensores para mejorar la calidad de la estimación del canal. En este trabajo, modificamos el algoritmo de clustering distribuido propuesto en un trabajo anterior para reducir la complejidad de la predicción de kriging. Se realizan simulaciones para detallar la técnica de formac…

:CIENCIAS TECNOLÓGICAS [UNESCO]Theoretical computer scienceWireless networkbusiness.industryComputer science020206 networking & telecommunications010103 numerical & computational mathematics02 engineering and technologyUNESCO::CIENCIAS TECNOLÓGICASradio environment maps01 natural sciencesdistributed channel predictionKey distribution in wireless sensor networksKrigingComputer engineeringKriging0202 electrical engineering electronic engineering information engineeringWireless0101 mathematicsCluster analysisbusinesswireless sensor networksWireless sensor networkInterpolation
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Localización de interiores mediante radiofrecuencia: Estudio, análisis y propuestas de mejora

2019

El sistema de posicionamiento global (GPS) es el sistema más utilizado en aplicaciones de localización en exteriores, pero es ineficiente para la localización en interiores. En los últimos años, los sistemas de posicionamiento en interiores se han desarrollado ampliamente. Para ello se han utilizado varias tecnologías inalámbricas, como ZigBee, WLAN y banda ultra ancha (UWB). Los principales métodos de medición de la señal inalámbrica en los sistemas de localización en interiores son el tiempo de llegada (TOA), la diferencia de tiempo de llegada (TDOA), el ángulo de llegada (AOA) y la indicación de intensidad de señal recibida (RSSI). Los sistemas de posicionamiento TOA, TDOA y AOA requiere…

:MATEMÁTICAS::Ciencia de los ordenadores::Informática [UNESCO]fingerprintinguwbUNESCO::MATEMÁTICAS::Ciencia de los ordenadores::Informáticalocalizacion en interioreswireless sensor networks
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Quantification of cortical proprioceptive processing through a wireless and miniaturized EEG amplifier.

2022

Corticokinematic coherence (CKC) is computed between limb kinematics and cortical activity (e.g. MEG, EEG), and it can be used to detect, quantify and localize the cortical processing of proprioceptive afference arising from the body. EEG-based studies on CKC have been limited to lab environments due to bulky, non-portable instrumentations. We recently proposed a wireless and miniaturized EEG acquisition system aimed at enabling EEG studies outside the laboratory. The purpose of this work is to compare the EEG-based CKC values obtained with this device with a conventional wired-EEG acquisition system to validate its use in the quantification of cortical proprioceptive processing. Eleven hea…

AdultMaleMovementlangaton tekniikkaYoung AdultmittauslaitteetElectronicHumansEEGwireless sensor networkslaboratoriesrecordingAmplifiers ElectronicsensoriverkotMagnetoencephalographyElectroencephalographylaboratoriotwireless communicationProprioceptionAmplifiersperformance evaluationaivokuoriAdult; Amplifiers; Electronic; Electroencephalography; Female; Humans; Magnetoencephalography; Male; Movement; Proprioception; Young Adultharmonic analysisFemaleelectroencephalographyAnnual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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A reliable CSMA protocol for high performance broadcast communications in a WSN

2014

Wireless Sensor Networks have been identified as a promising technology to efficiently perform distributed monitoring, tracking and control tasks. In order to accomplish them, since fast decisions are generally required, high values of throughput must be obtained. Additionally, a high packet reception rate is important to avoid wasting energy due to unsuccessful transmissions. These communication requirements are more easily satisfied by exploiting the broadcast nature of the wireless medium, which allows several simultaneous receptions through a unique node transmission. We propose a Medium Access Control protocol that ensures, simultaneously, high values of throughput and a high packet re…

Atomic broadcastKey distribution in wireless sensor networksbusiness.industryComputer scienceNode (networking)Media access controlWirelessThroughputBroadcastingbusinessBroadcast radiationWireless sensor networkComputer network2014 IEEE Global Communications Conference
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Multimode WSN: Improving Robustness, Fault Tolerance and Performance of Randomly Deployed Wireless Sensor Network

2010

This paper proposes an advanced, robust and flexible solution that applies the (revised) concept of Always Best Connected (ABC) Network, typical of multimode modern mobile devices, to Wireless Sensor Network. Hostile environments and unpredictable conditions (e.g. interferences) can negatively affect communication range, potentially increasing the number of unconnected nodes in random deployments. Multimode Wireless Sensor Network (MM-WSN) is provided with an adaptive mechanism for environmental condition evaluation and with the ability of self-configuring itself for optimal networking independence of detected conditions. Proposed solution is based on advanced smart nodes provided with mult…

Base stationKey distribution in wireless sensor networksWireless ad hoc networkRobustness (computer science)business.industryComputer scienceDistributed computingMobile wireless sensor networkWirelessNetwork performancebusinessWireless sensor networkComputer network2010 2nd International Conference on Computational Intelligence, Communication Systems and Networks
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