Enviaments recents

  • Modified oriented dihedral model for scattering characteristic description with PolSAR data 

    Chen, Yifan; Zhang, Lamei; Mallorquí Franquet, Jordi Joan; Zou, Bin (Institute of Electrical and Electronics Engineers (IEEE), 2024-01-19)
    Article
    Accés obert
    Dihedral is a common structure in polarimetric SAR images and can be found on many man-made targets. Many researchers have proposed different dihedral models, but the accuracy of these models is limited. In this case, the ...
  • On the design of a network digital twin for the radio access network in 5G and beyond 

    Vilà Muñoz, Irene; Sallent Roig, Oriol; Pérez Romero, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-20)
    Article
    Accés obert
    A Network Digital Twin (NDT) is a high-fidelity digital mirror of a real network. Given the increasing complexity of 5G and beyond networks, the use of an NDT becomes useful as a platform for testing configurations and ...
  • An assessment of SAOCOM L-Band PolInSAR capabilities for canopy height estimation: A case study over managed forests in Argentina 

    Seppi, Santiago Ariel; López Martínez, Carlos; Joseau, Marisa Jacqueline (Institute of Electrical and Electronics Engineers (IEEE), 2024-02-07)
    Article
    Accés obert
    This work presents the first results of canopy height mapping with L -Band SAOCOM data by means of Polarimetric SAR Interferometry (PolInSAR). For this study case, a colocated temporal series of SAOCOM fully polarimetric ...
  • Wavefront-modified vector beams for THz cornea spectroscopy 

    Lamberg, Joel; Zarrinkhat, Faezeh; Tamminen, Aleksi; Baggio, Mariangela; Ala-Laurinaho, Juha; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Khaled, Elsayed E. M.; Taylor, Zachary (Optical Society of American (OSA), 2023-11-20)
    Article
    Accés obert
    Terahertz spectroscopy is a promising method to diagnose ocular diseases, where the cornea is typically imaged by Gaussian beams. However, the beam’s mismatch with the cornea’s spherical surface produces a 5-10 % error in ...
  • Curved boundary integral method for electromagnetic fields 

    Lamberg, Joel; Zarrinkhat, Faezeh; Tamminen, Aleksi; Ala-Laurinaho, Juha; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Khaled, Elsayed; Taylor, Zachary (Optical Society of American (OSA), 2023-12-11)
    Article
    Accés obert
    The angular spectrum method is a rigorous method to synthesize near and far-field electromagnetic beams from planar field distributions. However, this limitation of planar surfaces has restricted its applicability to beams ...
  • Quality control of Doppler spectra from a vertically pointing, S-band profiling radar 

    Belak, Susan L.; Tanamachi, Robin; Asel, Matthew L.; Dennany, Grant; Gnanasambandam, Abhiram; Frasier, Steve; Rocadenbosch Burillo, Francisco (American Meteorological Society, 2024-02-21)
    Article
    Accés restringit per política de l'editorial
    This study describes a novel combination of methods to remove spurious spectral peaks, or “spurs,” from Doppler spectra produced by a vertically pointing, S-band radar. The University of Massachusetts S-band frequency-modulated, ...
  • Land, jet stream, and other atmospheric effects on burned area estimation during the South Asian heatwave of 2022 

    Irawan, Amir Mustofa; Vall-Llossera Ferran, Mercedes Magdalena; López Martínez, Carlos; Camps Carmona, Adriano José; Chaparro Danon, David; Portal González, Gerard; Pablos Hernández, Miriam; Alonso González, Alberto (2024-04)
    Article
    Accés obert
    Understanding the key variables that characterise fire propagation is important for a better estimation of fire events and their impacts. This study uses machine learning combined with satellite remote sensing and atmospheric ...
  • Minimum error entropy estimation under contaminated Gaussian noise 

    López Molina, Carlos Alejandro; Cabrera Estanyol, Ferran de; Riba Sagarra, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2023-10-12)
    Article
    Accés obert
    It is shown that Rényi's entropy of a Gaussian mixture with entropic index α∈(1,∞] is upper-bounded by the cluster with minimum variance. This basic idea leads to a clean worst-case formulation of the minimum error entropy ...
  • Magnetoelectric dipole antenna framework supporting orbital angular momentum modes 

    Jofre Cruanyes, Marc; Akazzim, Youness; Blanch Boris, Sebastián; Romeu Robert, Jordi; Cetiner, Bedri Artug; Jofre Roca, Lluís (2024)
    Article
    Accés restringit per política de l'editorial
    The ability to utilize resources to meet the need of growing diversity of communication services and user behavior marks the future of cognitive wireless communication systems. Cognitive wireless technologies for vehicular ...
  • DARIUS: a digital twin to improve the performance of quantum key distribution 

    Ahmadian, Seyed Morteza; Ruiz Ramírez, Marc; Comellas Colomé, Jaume; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2024-03-01)
    Article
    Accés obert
    Polarization encoded Quantum Key Distribution (QKD) is attracting great attention as it generates unlimitedly and unconditionally secure keys for different use cases. Despite its theoretical excellence based on quantum ...
  • LUT-free carrier recovery for intradyne optical DPSK receivers in udWDM-PON 

    Ghasemi, Saeed; Tabares Giraldo, Jeison; Polo Querol, Víctor; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2019-03-15)
    Article
    Accés obert
    We present a lookup table (LUT)-free carrier recovery architecture for intradyne optical DPSK receivers that reduce the required digital signal processing hardware resources, power consumption as well as total process ...
  • Quantum transport of high-dimensional spatial information with a nonlinear detector 

    Stephton, Bereneice; Valles Marin, Adam; Nape, Isaac; Cox, Mitchell A.; Steinlechner, Fabian; Konrad, Thomas; Pérez Torres, Juan; Roux, Filippus S.; Forbes, Andrew (2023-12-13)
    Article
    Accés obert
    Information exchange between two distant parties, where information is shared without physically transporting it, is a crucial resource in future quantum networks. Doing so with high-dimensional states offers the promise ...

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