Recent Submissions

  • Multi-TID detection and characterization in a dense Global Navigation Satellite System receiver network 

    Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel (2017-09-01)
    Article
    Restricted access - publisher's policy
    The medium-scale traveling ionospheric disturbances (MSTIDs) constitute the most frequent ionospheric wave signatures. We propose a method for detecting the number of simultaneous MSTIDs from a time series of high-pass-filtered ...
  • Empirical modelling of survey-based expectations for the design of economic indicators in five European regions 

    Claveria, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (2018-01-09)
    Article
    Restricted access - publisher's policy
    In this study we use agents’ expectations about the state of the economy to generate indicators of economic activity in twenty-six European countries grouped in five regions (Western, Eastern, and Southern Europe, and ...
  • Analysis of the optimum gain of a high-pass l-matching network for rectennas 

    Gasulla Forner, Manuel; Jordana Barnils, José; Sánchez Robert, Francesc Josep; Berenguer Sau, Jordi (MDPI AG, 2017-07-25)
    Article
    Open Access
    Rectennas, which mainly consist of an antenna, matching network, and rectifier, are used to harvest radiofrequency energy in order to power tiny sensor nodes, e.g., the nodes of the Internet of Things. This paper demonstrates ...
  • Tunable substrate integrated waveguide resonators 

    Mira, Fermin; Mateu Mateu, Jordi; Collado Gómez, Juan Carlos (2012-09-01)
    Article
    Open Access
    This paper presents a novel approach for providing SIW tunable resonators by means of placing an additional metalized via-hole on the waveguide cavity. The via-hole contains an open-loop slot on the top metallic wall. The ...
  • A knowledge-based approach to automatic detection of equipment alarm sounds in a neonatal intensive care unit environment 

    Raboshchuk, Ganna; Nadeu Camprubí, Climent; Jancovic, Peter; Peiró Lilja, Alexandre Cristian; Kokuer, Munevver; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana (2017-12-21)
    Article
    Open Access
    A large number of alarm sounds triggered by biomedical equipment occur frequently in the noisy environment of a neonatal intensive care unit (NICU) and play a key role in providing healthcare. In this paper, our work on ...
  • Direct MSTID mitigation in precise GPS processing 

    Hernández Pajares, Manuel; Wielgosz, Pawel; Paziewski, Jacek; Krypiak-Gregorczyk, Anna; Krukowska, Marta; Stepniak, Katarzyna; Kaplon, Jan; Hadas, Tomasz; Sosnica, Krzysztof; Bosy, Jaroslaw; Orús Pérez, Raul; Monte Moreno, Enrique; Yang, Heng; García Rigo, Alberto; Olivares Pulido, German (2017-03)
    Article
    Restricted access - publisher's policy
    In this paper, the authors summarize a simple and efficient approach developed to mitigate the problem in precise GNSS positioning originated by the most frequent ionospheric wave signatures: the Medium Scale Travelling ...
  • Energy efficiency in latency-constrained application offloading from mobile clients to multiple virtual machines 

    Lagén Morancho, Sandra; Pascual Iserte, Antonio; Muñoz Medina, Olga; Vidal Manzano, José (2017-11-28)
    Article
    Open Access
    This paper addresses the energy-latency trade-off in distributed application offloading, in which an energy-limited handset offloads totally or partially an application to one or several virtual machines (VMs) located in ...
  • Modeling of integrated erbium-doped waveguide amplifiers with overlapping factors methods 

    Vallés Brau, Juan Antonio; Lázaro Villa, José Antonio; Rebolledo Sanz, Miguel Ángel (1996-09)
    Article
    Restricted access - publisher's policy
    An analysis of the applicability of overlapping factors methods to the modeling of integrated erbium-doped waveguide amplifiers is presented. These methods offer as main advantage a considerable seduction in computation ...
  • Prospects of new planar optical waveguides based on eutectic microcomposites of insulating crystals: The ZrO 2 (c)-CaZrO 3 erbium doped system 

    Orera, Víctor M.; Peña Torre, José Ignacio; Merino Rubio, Rosa Isabel; Lázaro Villa, José Antonio; Vallés Brau, Juan Antonio; Rebolledo Sanz, Miguel Ángel (1997-11-10)
    Article
    Restricted access - publisher's policy
    A new approach to produce structured optical materials is described. The method relies on the capability of growing eutectic crystals of wide optical band gap materials by directional solidification procedures. The laser ...
  • Numerical simulation of bending effects in erbium-doped fibre amplifiers 

    Lázaro Villa, José Antonio; Rebolledo Sanz, Miguel Ángel (Institute of Physics (IOP), 1996-05)
    Article
    Restricted access - publisher's policy
    A numerical simulation of the effects caused by bends in erbium-doped fibres is presented. The perturbation of the gain and amplified spontaneous emission has been analysed with a model of the evolution of the pump, signal ...
  • Cost-effective DWDM ROADM design for flexible sustainable optical metro–access networks 

    Sarmiento Hernández, Samael; Altabas, Jose Antonio; Izquierdo, David; Garces, Ignacio; Spadaro, Salvatore; Lázaro Villa, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017-12)
    Article
    Open Access
    Architectural changes are required for the underlying networks to support the expected Internet data traffic volume growth caused by the popularization of cloud services, 5G-based services, and social networks, to provide ...
  • Network dimensioning and base station on/off switching strategies for sustainable deployments in remote areas 

    Rubio López, Javier; Olmo Alòs, Jaume del; Pascual Iserte, Antonio; Vidal Manzano, José; Muñoz Medina, Olga; Agustín de Dios, Adrián (2017-12)
    Article
    Open Access
    This paper provides a methodology for the dimensioning of the access network in remote rural areas, considering the progressive introduction of cellular services in these regions. A 3G small cell (SC) network with one or ...

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