Ara es mostren els items 1-20 de 39

    • A low-cost tracking system for running race applications based on bluetooth low energy technology 

      Pérez Díaz de Cerio, David; Hernandez Solana, Angela; Valdovinos, Antonio; Valenzuela González, José Luis (Multidisciplinary Digital Publishing Institute (MDPI), 2018-03-20)
      Article
      Accés obert
      Timing points used in running races and other competition events are generally based on radio-frequency identification (RFID) technology. Athletes’ times are calculated via passive RFID tags and reader kits. Specifically, ...
    • Alternativas en el desarrollo de aplicaciones para móviles 

      Valenzuela González, José Luis; Sallent Roig, Oriol; Bodas, J; Fernández, Victor (ETSETB UPC, 2000)
      Text en actes de congrés
      Accés obert
      Cuando se alcanza la etapa de madurez del mercado GSM, como sería el caso de España, se impulsan nuevos servicios y aplicaciones para móviles, cuyo desarrollo puede fundamentarse en diversas tecnologías. En esta comunicación ...
    • An experimental study of multi-radio platform coexistence in the 5 GHz band for railway applications 

      Vlad, Adrián; Hierro, José; González, Jesús; Martinez, R.; Navarro, Isabel; Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Collado Gómez, Juan Carlos; González Arbesú, José María; Alonso Zárate, Luis Gonzaga; Valenzuela González, José Luis; Laya Romero, Andrés Ernesto; Flores, Enrique (Springer Verlag, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper studies the practical challenges that arise due to the coexistence of two wireless technologies, both operating in the license-exempt 5 GHz band. In particular, WiFi and WiMAX equipment have been used in the ...
    • Analytical and experimental performance evaluation of BLE neighbor discovery process including non-idealities of real chipsets 

      Pérez Díaz de Cerio, David; Hernández, Ángela; Valenzuela González, José Luis; Valdovinos, Antonio (MDPI AG, 2017-03-03)
      Article
      Accés obert
      The purpose of this paper is to evaluate from a real perspective the performance of Bluetooth Low Energy (BLE) as a technology that enables fast and reliable discovery of a large number of users/devices in a short period ...
    • Anti-collision adaptations of BLE active scanning for dense IoT tracking applications 

      Hernandez Solana, Angela; Pérez Díaz de Cerio, David; Valdovinos, Antonio; Valenzuela González, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2018-09-15)
      Article
      Accés obert
      Bluetooth low energy (BLE) is one of most promising technologies to enable the Internet-of-Things (IoT) paradigm. The BLE neighbor discovery process (NDP) based on active scanning may be the core of multiple IoT applications ...
    • Audit of a real Wi-Fi deployment to provide data, VoIP communications and an IIoT item location service 

      Pérez Díaz de Cerio, David; Valenzuela González, José Luis; García Lozano, Mario (Academy Publisher, 2017-10-17)
      Article
      Accés restringit per política de l'editorial
      As the number of Access Points and stations sharing the unlicensed ISM (Industrial Scientific Medical) bands increases, interference diminishes the theoretical performance of 802.11 standard. This paper presents results ...
    • Bluetooth Low Energy sensor networks for railway applications 

      Hernandez Solana, Angela; Valdovinos, Antonio; Pérez Díaz de Cerio, David; Valenzuela González, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Comunicació de congrés
      Accés obert
      This paper analyzes the viability of Bluetooth Low Energy (BLE) as the enabling technology in railway scenarios to allow sensor data transmission from ground to train. This proposal is based on using the broadcasting ...
    • Bluetooth mesh analysis, issues, and challenges 

      Hernandez Solana, Angela; Pérez Díaz de Cerio, David; García Lozano, Mario; Valdovinos, Antonio; Valenzuela González, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
      Article
      Accés obert
      BLE is a widely used short-range technology which has gained a relevant position inside the Internet-of-Things (IoT) paradigm development thanks to its simplicity, low-power consumption, low-cost and robustness. New ...
    • BMADS: BLE mesh asynchronous dynamic scanning 

      Pérez Díaz de Cerio, David; Valenzuela González, José Luis; García Lozano, Mario; Hernandez Solana, Angela; Valdovinos, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2021-02-15)
      Article
      Accés obert
      The Bluetooth low-energy (BLE) mesh profile, currently standardized by the Bluetooth Special Interest Group (SIG), assumes that friend and relay nodes should be continuously scanning the channel ready to receive any incoming ...
    • CA1-MN1: Examen FQ: primavera 2019 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2019-06-18)
      Examen
      Accés restringit a la comunitat UPC
    • CA1-MN1: Examen MQ: primavera 2019 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2019-04-03)
      Examen
      Accés restringit a la comunitat UPC
    • Comunicaciones via radio: analisis corporativo de las prestaciones técnicas de igualación con modelos de canal y medidas de canal experimentales 

      Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José; Valenzuela González, José Luis (Universitat Politècnica de València, 1993)
      Text en actes de congrés
      Accés obert
    • Examen final 

      Valenzuela González, José Luis; Sánchez González, Juan (Universitat Politècnica de Catalunya, 2018-06-06)
      Examen
      Accés restringit a la comunitat UPC
    • Examen final 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2019-01-17)
      Examen
      Accés restringit a la comunitat UPC
    • Examen final 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2018-06-11)
      Examen
      Accés restringit a la comunitat UPC
    • Examen MQ 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2018-04-11)
      Examen
      Accés restringit a la comunitat UPC
    • Examen MQ 

      Valenzuela González, José Luis (Universitat Politècnica de Catalunya, 2018-11-06)
      Examen
      Accés restringit a la comunitat UPC
    • Examen MQ 

      Valenzuela González, José Luis; Sánchez González, Juan (Universitat Politècnica de Catalunya, 2018-04-06)
      Examen
      Accés restringit a la comunitat UPC
    • Experimental study of Bluetooth, ZigBee and IEEE 802.15.4 technologies on board high-speed trains 

      Higuera, Jorge; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga; Laya Romero, Andrés Ernesto; Martínez, Raquel; Aguilar, Alicia (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional ground-to-train communication. The presented ...
    • Experimental study of bluetooth, ZigBee and IEEE 802.15.4 technologies on board high-speed trains 

      Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga; Laya Romero, Andrés Ernesto; Martínez, Raquel; Aguilar, Alicia (2012)
      Article
      Accés restringit per política de l'editorial
      This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional ground-to-train communication. The ...