Ara es mostren els items 1-20 de 123

  • A holistic approach to ZigBee performance enhancement for home automation networks 

    Betzler, August; Gómez Montenegro, Carlos; Seyfettin Demirkol, Ilker; Paradells Aspas, Josep (2014-08-01)
    Article
    Accés obert
    Wireless home automation networks are gaining importance for smart homes. In this ambit, ZigBee networks play an important role. The ZigBee specification defines a default set of protocol stack parameters and mechanisms ...
  • A hybrid cooperative design for energy-efficient surveillance in wireless multimedia sensor networks 

    Alaei, Mohammad; Barceló Ordinas, José María (VDE Conference Publications, 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In Wireless Multimedia Sensor Networks (WMSNs) the lifetime of battery-operated visual nodes is limited by their energy consumption, which is proportional to the energy required for sensing, processing, and transmitting ...
  • A method for clustering and cooperation in wireless multimedia sensor networks 

    Alaei, Mohammad; Barceló Ordinas, José María (2010-04)
    Article
    Accés obert
    Wireless multimedia sensor nodes sense areas that are uncorrelated to the areas covered by radio neighbouring sensors. Thus, node clustering for coordinating multimedia sensing and processing cannot be based on classical ...
  • A new MPPT method for low-power solar energy harvesting 

    López Lapeña, Oscar; Penella López, María Teresa; Gasulla Forner, Manuel (2010-09)
    Article
    Accés obert
    This paper describes a new maximum-power-pointtracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. ...
  • A protocol architecture for energy efficient and pervasive eHealth systems 

    Tennina, Stefano; Di Renzo, Marco; Kartsakli, Elli; Graziosi, Fabio; Lalos, Aris S.; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The design of new and more pervasive healthcare systems has been fostered by the increased expectancy of life in the coming years. In this field, distributed and networked wireless embedded systems, such as Wireless Sensor ...
  • A simple and efficient MPPT method for low-power PV cells 

    Penella López, María Teresa; Gasulla Forner, Manuel (2014-01-01)
    Article
    Accés obert
    Small-size PV cells have been used to power sensor nodes. These devices present limited computing resources and so low complexity methods have been used in order to extract the maximum power from the PV cells. Among them, ...
  • A tool for rapid MAC protocols prototyping and designing for wireless sensor networks 

    Amorós Martínez, Luis Miguel (Universitat Politècnica de Catalunya, 2012-09-25)
    Projecte Final de Màster Oficial
    Accés obert
    Wireless Sensor Networks (WSNs)consists of several resource constrained sensor nodes distributed over an specific geographical area. WSNs are typically energy constraint due to the fact the sensor nodes are battery ...
  • A Topology Reorganization Scheme for Reliable Communication in Underwater Wireless Sensor Networks Affected by Shadow Zones 

    Domingo Aladrén, Mari Carmen (2009-10-29)
    Article
    Accés obert
    Effective solutions should be devised to handle the effects of shadow zones in Underwater Wireless Sensor Networks (UWSNs). An adaptive topology reorganization scheme that maintains connectivity in multi-hop UWSNs affected ...
  • A viability plan of a unit of research in applications of new telecommunications technologies 

    Tena del Pozo, Alberto (Universitat Politècnica de Catalunya, 2009-06-30)
    Projecte Final de Màster Oficial
    Accés obert
  • A ZigBee wireless sensor network compliant with the IEEE1451 standard 

    Higuera Portilla, Jorge Eduardo; Polo Cantero, José; Gasulla Forner, Manuel (2009)
    Text en actes de congrés
    Accés obert
    Wireless sensor networks are becoming very attractive for monitoring and control applications with smart sensor nodes. We present an implementation of a ZigBee wireless sensor network compliant with the IEEE1451 standard ...
  • Acoustic telemetry system for underwater sensors 

    Sarriá Gandul, David; Molino Minero, Erik; Manuel Lázaro, Antonio (IEEE, 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The design of an acoustic telemetry system is presented and evaluated. We describe the main characteristics of the communication system, the transmitter and the receiver. The scheme of the proposed design consists of ...
  • Adaptación de plataformas de sensores inalámbricas a la arquitectura de TinyOS 

    Gómez Sans, Álvaro (Universitat Politècnica de Catalunya, 2010-07)
    Projecte/Treball Final de Carrera
    Accés obert
    Este estudio esta realizado para dar una visión global del mundo de las redes de sensores inalámbricas a partir de aquí WSN, y sus aplicaciones. Tras una breve introducción se describe el proceso de selección de una ...
  • Aircraft wireless sensor network (WSN) testbed 

    Pérez Simó, Xavier (Universitat Politècnica de Catalunya, 2015-04-27)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb: TriaGnoSys
    [ANGLÈS] The objective of this thesis is to support the development of wireless sensor network (WSN) testbed in aircraft onboard network. This topic is currently having quite a lot of attention as airlines and aircraft ...
  • An energy efficient protocol architecture for m-Health systems 

    Tennina, Stefano; Kartsakli, Elli; Graziosi, Fabio; Santos, Manuel; Lalos, Aristeidis; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Contemporary technologies as implemented in the field of health care have provided the everyday clinical practice with a plethora of tools to be used in various settings. However, from all established and emerging applications, ...
  • Avaluació d'un sistema d'alimentació basat en energia solar per a nodes de xarxes de sensors sense fils 

    Marti Chico, Sergi (Universitat Politècnica de Catalunya, 2014-06-03)
    Projecte Final de Màster Oficial
    Accés obert
    This thesis provides an evaluation of a solar energy system employed as power supply for wireless sensor motes. For such purpose, it first gives an overview of the two most popular operating systems in Wireless Sensor ...
  • Connectivity of large-scale WSNs in fading environments under different routing Mechanisms 

    Antonopoulos, Angelos; Alonso, Luis; Verikoukis, Christos; Lalos, Aris S.; Mekikis, Prodromos-Vasileios; Kartsakli, Elli (Institute of Electrical and Electronic Engineers, 2015-06-12)
    Comunicació de congrés
    Accés obert
    As the number of nodes in wireless sensor networks (WSNs) increases, new challenges have to be faced in order to maintain their performance. A fundamental requirement of several applications is the correct transmission of ...
  • Consensus in random WSNs with correlated symmetric links 

    Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    In this paper we study the convergence of consensus algorithms in wireless sensor networks with random topologies and instantaneous symmetric links which exist with different probabilities independently in time but correlated ...
  • Contiki applications for Z1 motes for 6LowPAN 

    Mimbrero Catalán, Jose Ignacio (Universitat Politècnica de Catalunya, 2016-02-08)
    Projecte/Treball Final de Carrera
    Accés obert
    Contiki application for the Z1 motes of Zolertia, using the protocol 6LowPAN
  • Cost effective node deployment strategy for energy-balanced and delay-efficient data collection in wireless sensor networks 

    Doudou, Messaoud; Djenouri, Djamel; Barceló Ordinas, José María; Badache, Nadjib (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés obert
    The real-world node deployment aspect is investigated, while considering cost minimization for resolving the energy hole around the sink, which represents a serious problem in typical sensor networks with uniform distribution. ...
  • Delay-efficient MAC protocol with traffic differentiation and run-time parameter adaptation for energy-constrained wireless sensor networks 

    Doudou, Messaoud; Djenouri, Diamel; Barceló Ordinas, José María; Badache, Nadjib (2016-02-01)
    Article
    Accés obert
    This paper presents an asynchronous cascading wake-up MAC protocol for heterogeneous traffic gathering in low-power wireless sensor networks. It jointly considers energy/delay optimization and switches between two modes, ...