Now showing items 1-20 of 183

    • A cluster head decision system for sensor networks using fuzzy logic and number of neighbor nodes 

      Anno, Junpei; Barolli, Leonard; Durresi, Arjan; Xhafa Xhafa, Fatos; Koyama, Akio (Institute of Electrical and Electronics Engineers (IEEE), 2009)
      Conference report
      Open Access
      Cluster formation and cluster head selection are important problems in sensor network applications and can drastically affect the network’s communication energy dissipation. However, the selection of cluster head is not ...
    • A comprehensive method to taxonomize mechanical energy harvesting technologies 

      Diez, P.L.; Gabilondo, I.; Alarcón Cot, Eduardo José; Moll Echeto, Francisco de Borja (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Traditional industry is experiencing a worldwide development with Industry 4.0. Wireless sensor networks (WSNs) have a main role in this revolution as an essential part of data acquisition. The way in which WSNs are powered ...
    • A fuzzy-based cluster-head selection system for WSNs: a comparison study for static and mobile sensors 

      Barolli, Leonard; Wang, Qi; Kulla, Ellis; Xhafa Xhafa, Fatos; Kamo, Bexhet; Takizawa, Makoto (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
      Conference report
      Restricted access - publisher's policy
    • A holistic approach to ZigBee performance enhancement for home automation networks 

      Betzler, August; Gómez Montenegro, Carlos; Demirkol, Ilker Seyfettin; Paradells Aspas, Josep (2014-08-01)
      Article
      Open Access
      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)
      Conference report
      Restricted access - publisher's policy
      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
      Open Access
      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
      Open Access
      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 practical approach for NLOS mitigation in location-aware networks 

      René, Játiva A.; Valdiviezo, Santiago; Espinosa, Andy; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      This paper introduces a practical two-stage approach to achieve the mitigation of the Non Line Of Sight condition by using space-time diversity in timing-based mobile subscribers positioning systems. The first stage performs ...
    • A protocol architecture for energy efficient and pervasive eHealth systems 

      Tennina, Stefano; Di Renzo, Marco; Kartsakli, Elli; Graziosi, Fabio; Lalos, Aristeidis; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      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
      Open Access
      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 simulation system for routing efficiency in wireless sensor-actor networks: a case study for semi-automated architecture 

      Barolli, Leonard; Yang, Tao; Ikeda, Makoto; Durresi, Arjan; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Conference report
      Open Access
      Wireless networks have become increasingly popular and advances in wireless communications and electronics have enabled the development of different kind of networks such as Mobile Ad-hoc Networks (MANETs), Wireless Sensor ...
    • A simulation system for WSNs as a digital eco-system approach considering goodput metric 

      Barolli, Leonard; Yang, Tao; Mino, Gjergji; Durresi, Arjan; Xhafa Xhafa, Fatos (Institute of Electrical and Electronics Engineers (IEEE), 2010)
      Conference report
      Open Access
      Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. The sensors themselves ...
    • A tool for rapid MAC protocols prototyping and designing for wireless sensor networks 

      Amorós Martínez, Luis Miguel (Universitat Politècnica de Catalunya, 2012-09-25)
      Master thesis
      Open Access
      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
      Open Access
      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)
      Master thesis
      Open Access
    • A ZigBee wireless sensor network compliant with the IEEE1451 standard 

      Higuera Portilla, Jorge Eduardo; Polo Cantero, José; Gasulla Forner, Manuel (2009)
      Conference report
      Open Access
      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)
      Conference report
      Restricted access - publisher's policy
      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)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Pontificia Universidad Católica de Chile
      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)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   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)
      Conference report
      Restricted access - publisher's policy
      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, ...