Recent Submissions

  • A belief-based decision-making framework for spectrum selection in cognitive radio networks 

    Pérez Romero, Jordi; Raschellà, Alessandro; Sallent Roig, José Oriol; Umbert Juliana, Anna (2015-12-17)
    Article
    Open Access
    This paper presents a comprehensive cognitive management framework for spectrum selection in cognitive radio networks. The framework uses a belief vector concept as a means to predict the interference affecting the different ...
  • Performance of trellis-coded 8-DPSK modulation with co-channel interference in land mobile radio channels 

    Femenias Nadal, Guillem; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 1989)
    Conference report
    Open Access
    The BER (bit error rate) performance of uncoded 4-DPSK (differential phase shift keying) and coded 8-DPSK (with 8 and 16 state codes) modulation schemes have been studied. A Rayleigh mobile channel and the presence of ...
  • CEMs and Faraday rotation study of ¿-Fe2O3- Fe3O4films obtained by a new pyrolisis technique 

    Cusidó Fàbregas, Joan Antoni; Obradors Berenguer, Xavier; Fontcuberta, Josep; Isalgue Buxeda, Antonio; Canal Bienzobas, Fernando; Joubert, Jean C.; Langlet, M. (1987-01)
    Article
    Open Access
    Thin film iron oxides prepared by a new pyrolisis technique are studied by means of CEM spectroscopy and Faraday rotation measurements. It is shown that Fe3O4spinel oxides are obtained when the deposition is performed under ...
  • Subband splitting, adaptive scalar prediction and vector quantization for speech coding 

    Masgrau Gómez, Enrique José; Rodríguez Fonollosa, José Adrián; Mariño Acebal, José Bernardo (1988)
    Conference report
    Open Access
    This paper describes a new coding structure based on the combination of Vector Quantizati.on, Linear Prediction l)nd Subband Splitting that achieves high guality speech at rates below 10 Kbit/sec. In this scheme, a vector ...
  • Integration of MIRAS breadboard and future activities 

    Martín Neira, Manuel; Goutoule, J.M.; Knight, A.; Claude, J.; Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Lannes, A.; Anterrieu, E.; Laursen, B.; Skou, N. (1996)
    Conference report
    Open Access
    The European Space Agency (ESA) is conducting a feasibility study on MIRAS, a Microwave Imaging Radiometer using two dimensional aperture synthesis, for the mapping of soil moisture and ocean salinity from space. An aircraft ...
  • Theoretical research on new concepts for the remote sensing of hydrometeors 

    Martín Neira, Manuel; Bará Temes, Francisco Javier; Camps Carmona, Adriano José; Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Gasparini, O; Arbulino, M V (1996)
    Conference report
    Open Access
    There is an interest for climatology and meteorology to map hydrometeors, and in particular precipitation, both over the entire globe and across large defined regions. To achieve this goal at the proper spatial and temporal ...
  • The WISE 2000 campaign: sea surface salinity and wind retrievals from L-band radiometry 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Font Ferré, Jordi; Etcheto, Jacqueline; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Bará Temes, Francisco Javier; Torres Torres, Francisco; Wursteisen, Patrick; Martín Neira, Manuel (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2000)
    Conference report
    Open Access
    Sea surface salinity (SSS) has been recognized as a key parameter in climatological studies. SSS can be measured by passive microwave remote sensing at L band, where the sensitivity of the brightness temperatures shows a ...
  • Scattering and emissivity of rain events using boundary element method 

    Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena; Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Bara Temes, Francisco Javier; Torres Torres, Francisco (2000)
    Conference report
    Open Access
    The theory of thermal microwave emission from a bounded medium containing random nonspherical discrete scatters is studied. It is known that for a medium of constant temperature the emissivities can be related to the ...
  • Interferometric radiometry and its applications 

    Camps Carmona, Adriano José; Bará Temes, Francisco Javier; Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Duffo Ubeda, Núria; Vall-Llossera Ferran, Mercedes Magdalena (1999)
    Conference report
    Open Access
  • Design of a geosynchronous SAR system for water-vapour maps and deformation estimation 

    Monti Guarnieri, Andrea; Perletta, Luca; Rocca, Fabio; Scapin, Diego; Tebaldini, Stefano; Broquetas Ibars, Antoni; Ruiz Rodon, Josep (European Space Agency (ESA), 2011)
    Conference report
    Restricted access - publisher's policy
    In this paper, we propose a geosynchronous SAR concept that makes use of dual frequencies to achieve WIDE and SPOT coverage, aiming at continuous monitoring of deformation and generation of ...

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