Now showing items 21-33 of 33

  • La evaluación en PBL: un caso práctico 

    García Lozano, Mario; Pérez Díaz de Cerio, David; Valenzuela González, José Luis; Gelonch Bosch, Antonio José; Alonso Zárate, Luis Gonzaga; Ruiz Boqué, Sílvia (2008)
    Conference report
    Restricted access - publisher's policy
    Las ventajas de estructurar una asignatura, un conjunto o incluso todo un plan de estudios mediante Aprendizaje Basado en Proyectos (PBL) han sido ampliamente expuestas de forma teórica y práctica ...
  • Multipolling and OFDMA Reservation Protocol for IEEE 802.11 Networks 

    Pérez Díaz de Cerio, David; Valenzuela González, José Luis; Villares Piera, Nemesio Javier (Institute of Electrical and Electronic Engineers, 2009)
    Conference report
    Open Access
    This paper presents an efficient multipolling scheme that improves the IEEE 802.11 MAC protocol efficiency and does not suffer from the hidden terminal problem or inefficient channel usage problems. To design an efficient ...
  • On the feasibility 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 (2011)
    Conference report
    Open Access
    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 land-to-train communication. The presented ...
  • Opportunistic scheduling using an enhanced channel state information update scheme for WLAN systems with DQCA 

    Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2007)
    Conference lecture
    Restricted access - publisher's policy
    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 ...
  • Performance of adaptive bayesian equalizers in outdoor environments 

    Valenzuela González, José Luis; Casadevall Palacio, Fernando José (IEEE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC., 1997)
    Conference report
    Open Access
    Outdoor communications are affected by multipath propagation that imposes an upper limit on the system data rate and restricts possible applications. In order to overcome the degrading effect introduced by the channel, ...
  • Performance of blind equalization with higher order statistics in indoor radio environments 

    Valenzuela González, José Luis; Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-05)
    Article
    Open Access
    This paper analyzes the performance of blind equalization using the complex cepstrum of third-order moments applied to 4-QAM time division multiple access (TDMA) indoor radio communication systems. In particular, we have ...
  • Performance of Blind Equalization with Higher Order Statistics in Indoor Radio Environments 

    Valenzuela González, José Luis; Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (1997-05)
    Article
    Open Access
    This paper analyzes the performance of blind equalization using the complex cepstrum of third-order moments applied to 4-QAM time division multiple access (TDMA) indoor radio communication systems. In particular, we have ...
  • Principios de comunicaciones móviles 

    Sallent Roig, José Oriol; Valenzuela González, José Luis; Agustí Comes, Ramon (Edicions UPC, 2003)
    Book
    Restricted access to UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC users
    En este libro se presentan los aspectos fundamentales que intervienen en los sistemas de comunicaciones móviles, al objeto de facilitar la comprensión de los principios de funcionamiento y los requerimientos tanto actuales ...
  • Proposal and evaluation of BLE discovery process based on new features of bluetooth 5.0 

    Hernandez Solana, Angela; Pérez Díaz de Cerio, David; Valdovinos, Antonio; Valenzuela González, José Luis (MDPI AG, 2017-09-01)
    Article
    Open Access
    The device discovery process is one of the most crucial aspects in real deployments of sensor networks. Recently, several works have analyzed the topic of Bluetooth Low Energy (BLE) device discovery through analytical or ...
  • Provisioning vehicular services and communications based on a bluetooth sensor network deployment 

    Pérez Díaz de Cerio, David; Valenzuela González, José Luis (2015-06-01)
    Article
    Open Access
    It is very common to rule out Bluetooth as a suitable technology for vehicular communications. The reasons behind this decision usually result from misconceptions such as accepting that Bluetooth has a short application ...
  • Research activities at WiComTec-UPC research group 

    Ruiz Boqué, Sílvia; García Lozano, Mario; Pérez Díaz de Cerio, David; Valenzuela González, José Luis; Olmos Bonafé, Juan José; Alonso Zárate, Luis Gonzaga; Joud, Mohammad (2016)
    Conference report
    Restricted access - publisher's policy
    This paper is an introduction of the main research activities in which the Wireless Communications and Technologies research group (WiComTec-UPC) is involved now or has planned for the next years, oriented to disseminate ...
  • The help4mood wearable sensor network for inconspicuous activity measurement 

    Pérez Díaz de Cerio, David; Ruiz Boqué, Sílvia; Rosell Ferrer, Francisco Javier; Ramos Castro, Juan José; Valenzuela González, José Luis; Colomé Castellví, Josep Maria (2013-08)
    Article
    Restricted access - publisher's policy
    The Help4Mood EU FP7 project (H4M) [1] proposes to significantly advance the state-ofthe-art in computerized support for people with Major Depression by monitoring mood, physical activity and voice characteristics while ...
  • Trimming the power consumption of domestic Wi-Fi networks: how much power does your router need? 

    Pérez Díaz de Cerio, David; González Rodríguez, Marta; Valenzuela González, José Luis; González Arbesú, José María (2015)
    Conference report
    Restricted access - publisher's policy
    This work is part of a project where the goals are: designing energetically-optimum domestic WiFi routers; obtaining real and accurate power consumed models as a function of router configuration, and providing the ...