Enviaments recents

  • Radio resource management techniques for QoS provision in 5G networks 

    Datsika, Eftychia (Universitat Politècnica de Catalunya, 2018-11-26)
    Tesi
    Accés obert
    As numerous mobile applications and over-the-top (OTT) services emerge and mobile Internet connectivity becomes ubiquitous, the provision of high quality of service (QoS) is more challenging for mobile network operators ...
  • Radio frequency interference detection and mitigation techniques for navigation and Earth observation 

    Querol Borràs, Jorge (Universitat Politècnica de Catalunya, 2018-11-09)
    Tesi
    Accés obert
    Radio-Frequency Interference (RFI) signals are undesired signals that degrade or disrupt the performance of a wireless receiver. RFI signals can be troublesome for any receiver, but they are especially threatening for ...
  • Applications of L-band missions for environmental research 

    Chaparro Danon, David (Universitat Politècnica de Catalunya, 2018-10-15)
    Tesi
    Accés obert
    Human activity leads to environmental changes which threaten the vegetation. Global warm ing trends, deforestation and land cover, or modified Earth's surface albedo, are sorne examples of these environmental changes. ...
  • Semantic and generic object segmentation for scene analysis using RGB-D Data 

    Lin, Xiao (Universitat Politècnica de Catalunya, 2018-07-20)
    Tesi
    Accés obert
    In this thesis, we study RGB-D based segmentation problems from different perspectives in terms of the input data. Apart from the basic photometric and geometric information contained in the RGB-D data, also semantic and ...
  • Cellular networks for smart grid communication 

    Kalalas, Charalampos (Universitat Politècnica de Catalunya, 2018-07-19)
    Tesi
    Accés obert
    The next-generation electric power system, known as smart grid, relies on a robust and reliable underlying communication infrastructure to improve the efficiency of electricity distribution. Cellular networks, e.g., LTE/LTE-A ...
  • Deep learning for i-vector speaker and language recognition 

    Ghahabi Esfahani, Omid (Universitat Politècnica de Catalunya, 2018-05-29)
    Tesi
    Accés obert
    Over the last few years, i-vectors have been the state-of-the-art technique in speaker and language recognition. Recent advances in Deep Learning (DL) technology have improved the quality of i-vectors but the DL techniques ...
  • Investigation of continuous-wave range-resolved lidar systems for gas detection and concentration measurement 

    Batet Torrell, Óscar (Universitat Politècnica de Catalunya, 2011-07-27)
    Tesi
    Accés obert
    The techniques for detection of the atmosphere constituents and their distribution in the space have evolved in the last years driven by needs in the environmental, meteorological and climate science fields and backed by ...
  • Design and stochastic analysis of emerging large-scale wireless-powered sensor networks 

    Mekikis, Prodromos-Vasileios (Universitat Politècnica de Catalunya, 2017-11-13)
    Tesi
    Accés obert
    Undeniably, the progress in wireless networks during the last two decades is extraordinary. However, the ever-increasing upward trend in the numbers of wireless devices that will overwhelm every field of our everyday life, ...
  • Contribution to ground-based and UAV SAR systems for Earth observation 

    Lort Cuenca, Marc (Universitat Politècnica de Catalunya, 2017-11-17)
    Tesi
    Accés obert
    Mankind's way of life is the main driver of a planetary-scale change that is marked by the growing of human population's demand of energy, food, goods, services and information. As a result, it have emerged new ecological, ...
  • Contribution to advanced sensor development for passive imaging of the Earth 

    Durán Martínez, Israel (Universitat Politècnica de Catalunya, 2017-11-20)
    Tesi
    Accés obert
    This work has been formally undertaken within the frame of the scholarship number BES-2012-053917 of 1 December 2012, by the "Secretario de Estado de Investigación del Ministerio de Economía y Competitividad" related to ...
  • Redes de acceso UDWDM operadas con láseres aleatorios de sintonía limitada 

    Sales Zaragozá, Vicente (Universitat Politècnica de Catalunya, 2017-10-25)
    Tesi
    Accés obert
    A new passive optical network (PON) for access, making use of ultra-dense wavelength division multiplexing (UDWDM) by densely spacing channels by a few gigahertz and introducing the "wavelength-to-the-user" concept, is ...
  • Discriminative features for GMM and i-vector based speaker diarization 

    Zewoudie, Abraham Woubie (Universitat Politècnica de Catalunya, 2017-09-20)
    Tesi
    Accés obert
    Speaker diarization has received several research attentions over the last decade. Among the different domains of speaker diarization, diarization in meeting domain is the most challenging one. It usually contains spontaneous ...

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