Enviaments recents

  • Restricted Boltzmann machines for vector representation of speech in speaker recognition 

    Ghahabi, Omid; Hernando Pericás, Francisco Javier (Elsevier, 2018-01)
    Article
    Accés obert
    Over the last few years, i-vectors have been the state-of-the-art technique in speaker recognition. Recent advances in Deep Learning (DL) technology have improved the quality of i-vectors but the DL techniques in use are ...
  • GNSS-R altimetry performance analysis for the GEROS experiment on board the international space station 

    Camps Carmona, Adriano José; Hyuk, Park; Sekulic, Ivan; Rius Casals, Juan Manuel (MDPI AG, 2017-07-06)
    Article
    Accés obert
    The GEROS-ISS (GNSS rEflectometry, Radio Occultation and Scatterometry onboard International Space Station) is an innovative experiment for climate research, proposed in 2011 within a call of the European Space Agency ...
  • On-board beam generation for multibeam satellite systems 

    Joroughi, Vahid; Vázquez, Miguel Ángel; Pérez Neira, Ana Isabel; Devillers, Bertrand (2017-03-27)
    Article
    Accés obert
    This paper aims at designing an onboard beam generation process for a hybrid onboard on-ground multibeam satellite architecture. The proposed method offers a good tradeoff between total throughput and feeder link bandwidth ...
  • Motivations and outcomes: a study of an intensive international course 

    Myrup Pedersen, Jens; Gutiérrez López, José Manuel; Kirikova, Marite; Zabludowski, Lukasz; Comellas Colomé, Jaume (Tempus Publications, 2017-05-10)
    Article
    Accés restringit per política de l'editorial
    In this paper, we study what motivates students and university teachers to do intensive international courses, and how they evaluate the outcomes. The study is based on three years of an Erasmus funded Intensive Programme ...
  • Technology pillars in the architecture of future 5G mobile networks: NFV, MEC and SDN 

    Blanco, Begoña; Fajardo, Jose Oscar; Giannoulakis, Ioannis; Kafetzakis, Emmanouil; Peng, Shuping; Pérez Romero, Jordi; Trajkovska, Irena; Sayyad Khodashenas, Pouria; Goratti, Leonardo; Paolino, Michele; Sfakianakis, Evangelos; Liberal, Fidel; Xilouris, George (Elsevier, 2017-11-01)
    Article
    Accés obert
    This paper analyzes current standardization situation of 5G and the role network softwarization plays in order to address the challenges the new generation of mobile networks must face. This paper surveys recent documentation ...
  • On radio access network slicing from a radio resource management perspective 

    Sallent Roig, José Oriol; Pérez Romero, Jordi; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (2017-04)
    Article
    Accés obert
    Network slicing is a fundamental capability for future 5G networks to properly support current and envisioned future application scenarios. Network slicing facilitates a cost-effective deployment and operation of multiple ...
  • Steering and switching of soliton-like beams via interaction in a nanocolloid with positive polarizability 

    Salazar Romero, M. Y.; Ayala, Y. A.; Brambila, E.; Lopez Peña, L. A.; Sciberras, L.; Minzoni, A. A.; Terborg, Roland A.; Pérez Torres, Juan; Volke-Sepulveda, Karen (2017-07-01)
    Article
    Accés restringit per política de l'editorial
    We unveil different regimes for the interaction between two orthogonally polarized soliton-like beams in a colloidal suspension of nanoparticles with positive polarizability. The interaction is always attractive. However, ...
  • The TUCAN3G project: wireless technologies for isolated rural communities in developing countries based on 3G small-cell deployments 

    Martínez Fernández, Andrés; Vidal Manzano, José; Simó Reigadas, Javier; Prieto Egido, Ignacio; Agustín de Dios, Adrián; Paco, Juan; Rendón, Álvaro (2016-07-01)
    Article
    Accés obert
    Recent years have witnessed a massive penetration of cellular systems in developing countries. However, isolated rural areas (sparsely inhabited by low-income population) have been disregarded because classical access and ...
  • Precoding in multibeam satellite communications: present and future challenges 

    Vazquez, Miguel Angel; Pérez Neira, Ana Isabel; Christopoulos, Dimitrios; Chatzinotas, Symeon; Ottersten, Björn; Arapoglou, Pantelis-Daniel; Ginesi, Alberto; Tarocco, Giorgio (2016-12-01)
    Article
    Accés obert
    Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall system throughput. As a matter of fact, users ...
  • Onboard beam generation for multibeam satellite systems 

    Joroughi, Vahid; Vazquez, Miguel Angel; Pérez Neira, Ana Isabel; Devillers, Bertrand (2017-06-01)
    Article
    Accés obert
    This paper aims at designing an onboard beam generation process for a hybrid onboard on-ground multibeam satellite architecture. The proposed method offers a good tradeoff between total throughput and feeder link bandwidth ...

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