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Ara es mostren els items 20-39 de 53

    • Fusion of WLAN and GNSS observables for positioning in urban areas: the position ambiguity 

      Fernández, Daniel; Barceló Arroyo, Francisco; Martín Escalona, Israel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes a positioning method that combines GPS pseudoranges and WLAN ranges when less than four GPS satellites are within sight. To enhance the positioning availability, a tight hybridization approach with both ...

    • IEEE 802.11mc ranging performance in a real NLOS environment 

      Zola, Enrica Valeria; Martín Escalona, Israel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      Since IEEE 802.11 defined a couple of enhancements that allow accurate time measurements in COTS Wi-Fi devices, the possibility of achieving precise low-cost distance estimations in Wi-Fi has become a reality. However, ...

    • Impact of the range and geometry estimation in the accuracy of the passive TDOA algorithm 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria (2012)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The positioning ability is essential in mobile networks. Providing the position of entities is in general a complex task that becomes especially hard in ad hoc networks. In these networks, the topology cannot be planned ...

    • Impact of unreliable positioning in location-based routing protocols for MANETs 

      Martín Escalona, Israel; Perrone, Fabio; Zola, Enrica Valeria; Barceló Arroyo, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
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      MANETs have been focusing the interest of researchers for several years. The new scenarios where MANETs are being deployed make that several challenging issues remain open: node scalability, energy efficiency, network ...

    • Impacto del modelo de error en distancia en la simulación de sistemas de localización 

      Guardiola, Salvador; Martín Escalona, Israel; Barceló Arroyo, Francisco; Ciurana Adell, Marc (2010)
      Comunicació de congrés
      Accés obert
      Las redes inalámbricas han favorecido enormemente el interés de los usuarios, proveedores de servicio y operadores de red en el posicionamiento geográfico. Como consecuencia, se han propuesto mecanismos en la mayor parte ...

    • Implementación en el espacio de usuario del protocolo de encaminamiento AODVv2 

      Machado Sánchez, Sergio; Martín Escalona, Israel; Zola, Enrica Valeria; Barceló Arroyo, Francisco; Ozón Górriz, Francisco Javier (Jornadas de Ingeniería Telemática (JITEL), 2021)
      Text en actes de congrés
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      El protocolo AODV es un protocolo reactivo de encaminamiento para redes MANET que se utiliza frecuentemente como referencia tanto para desarrollar nuevos protocolos de encaminamiento en redes ad hoc como para evaluar su ...

    • Implementation and analysis of the AODVv2 routing protocol in ARM devices 

      Zola, Enrica Valeria; Martín Escalona, Israel; Barceló Arroyo, Francisco; Machado Sánchez, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      AODVv2 is a well-known routing protocol used in MANETs (Mobile Ad hoc Networks). Formerly known as DYMO (DYnamic MANET On-demand), it is frequently used as a reference for routing protocols assessment. However, implementations ...

    • Implementation and performance assessment of location-based routing protocols for MANETs 

      Martín Escalona, Israel; Zola, Enrica Valeria; Perrone, Fabio; Barceló Arroyo, Francisco; Machado Sánchez, Sergio (Association for Computing Machinery (ACM), 2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Mobile ad-hoc networking is a topic that has caught the interest of the research community for years. Although MANETs were introduced time ago, routing in such difficult environments is still an open issue. Routing protocols ...

    • Improving fingerprint-based positioning by using IEEE 802.11mc FTM/RTT observables 

      Martín Escalona, Israel; Zola, Enrica Valeria (Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-27)
      Article
      Accés obert
      Received signal strength (RSS) has been one of the most used observables for location purposes due to its availability at almost every wireless device. However, the volatile nature of RSS tends to yield to non-reliable ...

    • Linux-based measuring platform for time-based location observables in IEEE 802.11 networks 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; Zola, Enrica Valeria (University of Bern, 2013)
      Text en actes de congrés
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      Positioning has been a hot topic in research for several years. GPS is accepted as a global solution for positioning outdoors, but indoor positioning still remains an open issue. Time-based multilateration techniques are ...

    • Middleware for positioning in cellular networks 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; Ciurana Adell, Marc (2011-04-23)
      Capítol de llibre
      Accés restringit per decisió de l'autor

    • Middleware-controlled resource consumption for location traffic in cellular networks 

      Martín Escalona, Israel; Barceló Arroyo, Francisco (2007)
      Article
      Accés restringit per política de l'editorial
      Location is valuable information for services implemented in wireless networks. Location systems often use the infrastructure of cellular networks that have already been deployed. Accordingly, location systems spend resources ...

    • New trends in mobility modelling and handover prediction 

      Barceló Arroyo, Francisco; Gorawski, Michal; Grochla, Krzysztof; Martín Escalona, Israel; Polys, Konrad; Ribeiro, Andrea G.; Sofia, Rute; Zola, Enrica Valeria (Springer, 2014)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Wireless networks of moving objects have drawn significant attention recently. These types of networks consist of a number of autonomous or semi-autonomous wireless nodes/objects moving with diverse patterns and speeds ...

    • On the availability of GNSS and terrestrial location techniques: a field study 

      Martín Escalona, Israel; Barceló Arroyo, Francisco; De la fuente, Andres (2009)
      Text en actes de congrés
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      Hybridization is a hot topic in the location field. Since there is no universal location technique that is capable of positioning in indoor and outdoor environments, two or more techniques must be coupled to produce a ...

    • On the Resolution of position ambiguity when integrating GNSS and WLAN observables 

      Fernández, Daniel; Ciurana Adell, Marc; Jofre, Martí; Gutiérrez, Esteban; Chester, Ed; Barceló Arroyo, Francisco; Martín Escalona, Israel (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This contribution proposes a positioning system that fuses GPS pseudoranges and WLAN ranges when fewer than four GPS satellites are available. In order to enhance as much as possible the positioning availability, a tight ...

    • Passive round-trip-time positioning in dense ieee 802.11 networks 

      Martín Escalona, Israel; Zola, Enrica Valeria (2020-08-01)
      Article
      Accés obert
      The search for a unique and globally available location solution has attracted researchers for a long time. However, a solution for indoor scenarios, where high accuracy is needed, and Global Positioning System (GPS) is ...

    • Performance evaluation of the passive TDOA algorithm in dark areas 

      Martín Escalona, Israel; Malpartida, Marta; Barceló Arroyo, Francisco (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Positioning in wireless networks has recently concentrated the interest of the research community. Outdoor positioning has been addressed successfully, but location indoors poses some open issues. Time-based ranging ...

    • Performance stability of software ToA-based ranging in WLAN 

      Ciurana Adell, Marc; Giustiniano, Domenico; Neira, Albert; Barceló Arroyo, Francisco; Martín Escalona, Israel (2010)
      Text en actes de congrés
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      This article proposes a set of strategies to improve the performance stability and reliability of purely software ToA-based ranging with off-the-shelf WLAN equipment. Taking as starting point the core design lines proposed ...

    • Plataforma de posicionamiento basada en el algoritmo Passive TDOA 

      Martín Escalona, Israel (Universitat Politècnica de Catalunya, 2013-01-23)
      Projecte/Treball Final de Carrera
      Accés restringit per acord de confidencialitat

    • Positioning terminals in mobile computing networks 

      Barceló Arroyo, Francisco; Martín Escalona, Israel; Ciurana Adell, Marc (2013-03-27)
      Article
      Accés obert