Recent Submissions

  • H3D-Net: Few-shot high-fidelity 3D head reconstruction 

    Ramon Maldonado, Eduard; Triginer Garcés, Gil; Escurt i Gelabert, Janna; Pumarola Peris, Albert; García Giráldez, Jaime; Giró Nieto, Xavier; Moreno-Noguer, Francesc (Computer Vision Foundation, 2021)
    Conference lecture
    Open Access
    Recent learning approaches that implicitly represent surface geometry using coordinate-based neural representations have shown impressive results in the problem of multi-view 3D reconstruction. The effectiveness of these ...
  • Seasonal contrast: Unsupervised pre-training from uncurated remote sensing data 

    Mañas Sánchez, Óscar; Lacoste, Alexandre; Giró Nieto, Xavier; Vázquez Bermúdez, David; Rodriguez López, Pau (Computer Vision Foundation, 2021)
    Conference lecture
    Open Access
    Remote sensing and automatic earth monitoring are key to solve global-scale challenges such as disaster prevention, land use monitoring, or tackling climate change. Although there exist vast amounts of remote sensing data, ...
  • How2Sign: A large-scale multimodal dataset for continuous American sign language 

    Cardoso Duarte, Amanda; Palaskar, Shruti; Ventura Ripol, Lucas; Ghadiyaram, Deepti; DeHaan, Kenneth; Metze, Florian; Torres Viñals, Jordi; Giró Nieto, Xavier (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference lecture
    Open Access
    One of the factors that have hindered progress in the areas of sign language recognition, translation, and production is the absence of large annotated datasets. Towards this end, we introduce How2Sign, a multimodal and ...
  • Soporte universitario al paso a docencia virtual debido a la COVID-19 y su seguimiento por parte del profesorado 

    Amante García, Beatriz; Macarulla Martí, Marcel; Canals Casals, Lluc; Tejedor Herrán, Blanca; Vallverdú Bayés, Sisco (Asociación Española de Ingeniería de Proyectos (AEIPRO), 2021)
    Conference report
    Open Access
    La virtualidad de las clases universitarias es una realidad imperativa desde el primer confinamiento provocado por la COVID-19. Cada universidad ha tenido un proceso de adaptación diferente y en grandes universidades con ...
  • A technique for OFDM symbol slicing 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    This work presents an orthonormal transform that splits the Orthogonal Frequency Division Multiplex (OFDM) symbol into slices with ranked rate and decoding complexity. The advantage over the existing carrier or time ...
  • Joint beam-hopping scheduling and power allocation in NOMA-assisted satellite systems 

    Wang, Anyue; Lei, Lei; Lagunas Targarona, Eva; Chatzinotas, Simeon; Pérez Neira, Ana Isabel; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    In this paper, we investigate potential synergies of non-orthogonal multiple access (NOMA) and beam hopping (BH) for multi-beam satellite systems. The coexistence of BH and NOMA provides time-power-domain flexibilities in ...
  • Enhancing cell-free massive MIMO networks through LEO satellite integration 

    Riera Palou, Felip; Femenias Nadal, Guillem; Caus López, Màrius; Shaat, Musbah; García Morales, Jan; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    This paper proposes a hybrid network architecture combining a cell-free Massive MIMO terrestrial layout with a low Earth orbit satellite segment jointly targeting the maximization of the minimum per-user rate in the coverage ...
  • Variance processing for stable boundary-layer height estimation using backscatter lidar data: A discussion 

    Muñoz Porcar, Constantino; Silva, Marcos Paulo Araujo da; Saeed, Umar; Rey Micolau, Francesc; Pay Pérez, M. Teresa; Rocadenbosch Burillo, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    In this paper we present a method for estimating the height of the nocturnal stable boundary layer by using lidar measurements and a single radiosonde for unambiguous initial guess. The method relies on the correlation ...
  • Floating Doppler Wind Lidar motion simulator for horizontal wind speed measurement error assessment 

    Salcedo Bosch, Andreu; Farré Guarné, Joan; Sala Álvarez, José; Villares Piera, Nemesio Javier; Tanamachi, Robin; Rocadenbosch Burillo, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    This study presents a wind retrieval simulator of a floating Doppler Wind Lidar (DWL) with 6 Degrees of Freedom (DoF) motion. The simulator considers a continuous-wave conical-scanning floating DWL which retrieves the wind ...
  • Experimental demonstration of widely tunable rate/reach adaptation from 80 km to 12,000 km using probabilistic constellation shaping 

    Gené Bernaus, Joan M.; Chen, Xi; Cho, Junho; Chandrasekhar, Sethumadhavan; Winzer, Peter (2020)
    Conference report
    Open Access
    We experimentally demonstrate the rate/reach adaptability of probabilistically constellation-shaped quadrature amplitude modulation across from 80 km to 12,000 km using the same 32-GBaud transponder hardware and highlight ...
  • On the benefits of probabilistic constellation shaping in Flex-Grid/MCF dynamic optical backbone networks 

    Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    In this paper, we propose a novel methodology for estimating the worst-case spectral efficiency (b/s/Hz) of end-to-end paths across a Multi-Core Fiber (MCF)-enabled Flex-Grid optical network, accounting for physical link ...
  • Adaptive and iterative QoT estimator retraining for launch power optimization 

    Mahajan, Ankush; Christodoulopoulos, Konstantinos; Martínez Rivera, Ricardo Victor; Muñoz González, Raül; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Conference report
    Open Access
    We dynamically optimize the transponders launch powers with iterative closed control loops. We close the loop after an adaptable number of algorithm’s intermediate calculations, to monitor and retrain the QoT estimator ...

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