Enviaments recents

  • Improving i-Vector and PLDA based speaker clustering with long-term features 

    Woubie, Abraham; Luque, Jordi; Hernando Pericás, Francisco Javier (International Speech Communication Association (ISCA), 2016)
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    i-vector modeling techniques have been successfully used for speaker clustering task recently. In this work, we propose the extraction of i-vectors from short-and long-term speech features, and the fusion of their PLDA ...
  • 1Gbps full-duplex 5GHz frequency slots uDWDM flexible metro/access networks based on VCSEL-RSOA transceiver 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Garces, Ignacio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    1Gbps full-duplex 5GHz frequency slot is proposed for uDWDM Flexible Metro-Access Networks. The costeffective ONU transceiver is based on VCSEL as LO for coherent reception and seed for phase-modulated RSOA, providing ...
  • Advanced signal processing techniques for fixed and mobile satellite communications 

    Henarejos, Pol; Pérez Neira, Ana Isabel; Mazzali, N.; Mosquera Nartallo, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Enabling ultra fast systems has been widely investigated during recent decades. Although polarization has been deployed from the beginning in satellite communications, nowadays it is being exploited to increase the throughput ...
  • Deep neural networks for i-vector language identification of short utterances in cars 

    Ghahabi Esfahani, Omid; Bonafonte Cávez, Antonio; Hernando Pericás, Francisco Javier; Moreno Bilbao, M. Asunción (International Speech Communication Association (ISCA), 2016)
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    This paper is focused on the application of the Language Identification (LID) technology for intelligent vehicles. We cope with short sentences or words spoken in moving cars in four languages: English, Spanish, German, ...
  • Quantitative analysis of dynamic dedicated path protection in Elastic Optical Networks 

    Comellas Colomé, Jaume; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    A simple scheme to implement dedicated path protection in Elastic Optical Networks is proposed and evaluated under dynamic traffic conditions. It consists in splitting the spectrum available in the network links in two ...
  • Hybrid analog-digital transmit beamforming for spectrum sharing satellite-terrestrial systems 

    Vazquez, Miguel Angel; Blanco, Luis; Artiga Campos, Xavier; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    This paper deals with the problem of hybrid analog-digital transmit beamforming under spectrum sharing constraints. Hybrid multiantenna architectures are ideal for high throughput wireless links, where full-digital solutions ...
  • On modeling channel selection in LTE-U as a repeated game 

    Pérez Romero, Jordi; Sallent Roig, José Oriol; Ahmadi, H.; Macaluso, I. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    This paper addresses the channel selection problem for Long Term Evolution Unlicensed (LTE-U). Channel selection is a frequency-domain mechanism that facilitates the coexistence of multiple networks sharing the unlicensed ...
  • Network architecture and essential features for 5G: the SESAME project approach 

    Goratti, Leonardo; Costa, Cristina E.; Pérez Romero, Jordi; Sallent Roig, José Oriol; Ruiz, Cristina; Betzler, August; Sayyad Khodashenas, Pouria; Vahid, Seiamak; Nasr, Karim; Abubakar, Babangida; Whitehead, Alan; Belesioti, Maria; Chochliouros, Ioannis (Springer, 2016)
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    The outstanding and continuous growth of the request of mobile broadband Internet access is creating the unprecedented need to rethink most of the design paradigms of the mobile network. Such trend is accompanied by ...
  • Distributed multivariate regression with unknown noise covariance in the presence of outliers: an MDL approach 

    López Valcarce, Roberto; Romero Gonzalez, Daniel; Sala Álvarez, José; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    We consider the problem of estimating the coefficients in a multivariable linear model by means of a wireless sensor network which may be affected by anomalous measurements. The noise covariance matrices at the different ...
  • Novel formulation of coefficients of low-pass prototype filter for the design of fourelement planar filtering antenna array 

    Kufa, Martin; Raida, Zbynek; Mateu Mateu, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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    The paper is focused on a formulation of a new coefficient of the low-pass prototype filter for the design of a four-element filtering antenna array. Due to the new gicoefficients, we can comfortably and easily control a ...

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