Enviaments recents

  • Integration of an adaptive infotainment system in a vehicle and validation in real driving scenarios 

    Galarza Osio, Miguel Ángel; Bayona Margarit, Teresa; Paradells Aspas, Josep (2017-02-15)
    Article
    Accés obert
    More services, functionalities, and interfaces are increasingly being incorporated into current vehicles and may overload the driver capacity to perform primary driving tasks adequately. For this reason, a strategy for ...
  • BaNa: a noise resilient fundamental frequency detection algorithm for speech and music 

    Yang, Na; Ba, He; Cai, Weiyang; Seyfettin Demirkol, Ilker; Heinzelman, Wendi (2014-08-27)
    Article
    Accés obert
    Fundamental frequency (F0) is one of the essential features in many acoustic related applications. Although numerous F0 detection algorithms have been developed, the detection accuracy in noisy environments still needs ...
  • Has time come to switch from duty-cycled MAC protocols to wake-up radio for wireless sensor networks? 

    Oller, Joaquim; Seyfettin Demirkol, Ilker; Casademont Serra, Jordi; Paradells, Josep; Gamm, Gerd Ulrich; Reindl, Leonhard Michael (2016-04-01)
    Article
    Accés obert
    Duty-cycled Medium Access Control (MAC) protocols certainly improve the energy efficiency of wireless networks. However, most of these protocols still suffer from severe degrees of overhearing and idle listening. These two ...
  • On-demand sensor node wake-up using solar panels and visible light communication 

    Carrascal, Carolina; Seyfettin Demirkol, Ilker; Paradells, Josep (2016-03-01)
    Article
    Accés obert
    To significantly reduce, or eliminate completely, the energy waste caused by the standby (idle) mode of wireless sensor nodes, we propose a novel on-demand wake-up system, which allows the nodes to be put into sleep mode ...
  • A practical framework for 802.11 MIMO rate adaptation 

    Deek, Lara; García Villegas, Eduard; Belding, Elizabeth; Lee, Sung-Ju; Almeroth, Kevin (2015-06-04)
    Article
    Accés restringit per política de l'editorial
    The emergence of MIMO antennas and channel bonding in 802.11n wireless networks has resulted in a huge leap in capacity compared with legacy 802.11 systems. This leap, however, adds complexity to optimizing transmission. ...
  • Enabling always on service discovery: WI-FI neighbor awareness networking (NAN) 

    Camps Mur, Daniel; García Villegas, Eduard; López Aguilera, M. Elena; Loureiro, Paulo; Lambert, Paul; Raissinia, Ali (2015-04-01)
    Article
    Accés obert
    There is untapped potential in the WiFi radios embedded in our smartphone and tablet devices. In this article we introduce the WiFi Neighbor Awareness Networking technology being standardized in the WiFi Alliance (R), which ...
  • A novel cheater and jammer detection scheme for IEEE 802.11-based wireless LANs 

    García Villegas, Eduard; Afaqui, Muhammad Shahwaiz Iqbal; López Aguilera, M. Elena (2015-07-05)
    Article
    Accés restringit per política de l'editorial
    The proliferation of IEEE 802.11 networks has made them an easy and attractive target for malicious devices/adversaries which intend to misuse the available network. In this paper, we introduce a novel malicious entity ...
  • CoCoA+: an advanced congestion control mechanism for CoAP 

    Betzler, August; Gómez Montenegro, Carlos; Seyfettin Demirkol, Ilker; Paradells Aspas, Josep (Elsevier, 2015-10-01)
    Article
    Accés obert
    The Constrained Application Protocol (CoAP) has been designed by the Internet Engineering Task Force (IETF) for Internet of Things (IoT) devices. Due to the limited radio channel capacities and hardware resources of such ...
  • REACH2-Mote: a range-extending passive wake-up wireless sensor node 

    Chen, Li; Warner, Jeremy; Yung Pak, Lam; Zhou, Dawei; Heinzelman, Wendi; Seyfettin Demirkol, Ilker; Muncuk, Ufuk; Chowdhury, Kaushik Roy; Basagni, Stefano (2015-11-01)
    Article
    Accés obert
    A wireless sensor network that employs passive radio wake-up of the sensor nodes can reduce the energy cost for unnecessary idle listening and communication overhead, extending the network lifetime. A passive wake-up radio ...
  • Performance evaluation and comparative analysis of SubCarrier Modulation Wake-up radio systems for energy-efficient wireless sensor networks 

    Oller Bosch, Joaquim; Seyfettin Demirkol, Ilker; Casademont Serra, Jordi; Paradells Aspas, Josep; Gamm, Gerd Ulrich; Reindl, Leonhard Michael (2013-12-19)
    Article
    Accés obert
    Energy-efficient communication is one of the main concerns of wireless sensor networks nowadays. A commonly employed approach for achieving energy efficiency has been the use of duty-cycled operation of the radio, where ...

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