Browsing by Author "Bergadà Caramés, Pau"

Now showing items 1-12 of 12

    • A comprehensive sounding of the ionospheric HF radio link from Antarctica to Spain 

      Ads, Ahmed Gamal; Bergadà Caramés, Pau; Vilella Parra, Carles; Regué, Joan Ramon; Pijoan Vidal, Joan Lluís; Bardají Benach, Raúl; Mauricio Ferré, Juan (Radio Science, 2013. Vol.48, 1, Gener - Febrer, 2013-01)
      Since 2003, our group has been investigating the performance of different transmission techniques for low-power low-interference High Frequency (HF) ionospheric communication systems. Specifically, we ...

    • An Approach to Frequency Selectivity in an Urban Environment by Means of Multi-Path Acoustic Channel Analysis 

      Bergadà Caramés, Pau; Alsina Pagès, Rosa Maria (Sensors. 2019. Vol. 19, No. 12, 2019-06)
      The improvement of quality of life in the framework of the smart city paradigm cannot be limited to a set of objective measures carried out over several critical parameters (e.g., noise or air pollution). ...

    • Digital Transmission Techniques for a Long Haul HF Link: DS-SS vs. OFDM 

      Bergadà Caramés, Pau; Alsina Pagès, Rosa Maria; Pijoan Vidal, Joan Lluís; Salvador Marín, Martí; Regué, Joan Ramon; Badia Folguera, David; Graells Castellà, Simó (Radio Science. 2014, Vol.49, No.7 (Juliol), 2014-06)
      This paper presents two digital transmission techniques for long haul ionospheric links. Since2003 we have studied the HF link between the Antarctic Spanish Base, Juan Carlos I, and Spain; and wehave ...

    • Fuzzy Logic Control for Multiresolutive Adaptive PN Acquisition Scheme in Time-Varying Multipath Ionospheric Channel 

      Alsina Pagès, Rosa Maria; Mateo Segura, Clàudia; Socoró Carrié, Joan Claudi; Bergadà Caramés, Pau (Fuzzy Logic - Controls, Concepts, Theories and Applications, 2012-03)
      Communication with remote places is a challenge often solved using satellites. However, when trying to reach Antarctic stations, this solution suffers from poor visibility range and high operational ...

    • Ionospheric Narrowband and Wideband HF Soundings for Communications Purposes: A Review 

      Hervás García, Marcos; Bergadà Caramés, Pau; Alsina Pagès, Rosa Maria (Sensors, 2020, Vol. 20 No 9, 2020-04)
      High Frequency (HF) communications through ionospheric reflection is a widely usedtechnique specifically for maritime, aeronautical, and emergency services communication withremote areas due ...

    • Low Rate High Frequency Data Transmission from Very Remote Sensors 

      Bergadà Caramés, Pau; Alsina Pagès, Rosa Maria; Vilella Parra, Carles; Regué, Joan Ramon (Remote Sensing - Advanced Techniques and Platforms, 2012-06)
      This chapter deals with the difficulties of transmitting data gathered from sensors placedin very remote areas where energy supplies are scarce. The data link is established bymeans of the ionosphere, ...

    • Polarization diversity in a long-haul transequatorial HF link from Antarctica to Spain 

      Bergadà Caramés, Pau; Alsina Pagès, Rosa Maria; Hervás García, Marcos (Radio Science. 2017. Vol.52 Nº.1 (Gener), 2017-01)
      This paper describes a set of experiments which examine the feasibility of applying polarization diversity to a 12,760 km ionospheric link from Livingston Island (62.6°S, 60.4°W), South Shetlands, to ...

    • Remote Sensor Data Transmission from Antarctica to Spain with a Long-Haul HF Ionospheric Link 

      Alsina Pagès, Rosa Maria; Badia Folguera, David; Bergadà Caramés, Pau; Hervás García, Marcos; Orga Vidal, Ferran; Pijoan Vidal, Joan Lluís; Regué, Joan Ramon; Salvador Marín, Martí; Altadill Felip, David (2015)
      The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (BAE), on Livingston Island (62.6S, 60.4W), has been monitoring the magnetic field in the Antarctic region for more than fifteen ...

    • Remote Sensor Data Transmission from Antarctica to Spain with a Long-Haul HF Ionospheric Link 

      Alsina Pagès, Rosa Maria; Badia Folguera, David; Bergadà Caramés, Pau; Hervás García, Marcos; Orga Vidal, Ferran; Pijoan Vidal, Joan Lluís; Regué, Joan Ramon; Salvador Marín, Martí; Altadill Felip, David (2015)
      The geophysical observatory in the Antarctic Spanish Station Juan Carlos I (BAE), on Livingston Island (62.6S, 60.4W), has been monitoring the magnetic field in the Antarctic region for more than fifteen ...

    • The impact of man-made noise on the passenger transport stations of Port of Barcelona 

      Alsina Pagès, Rosa Maria; Socoró Carrié, Joan Claudi; Bergadà Caramés, Pau (2019-06)
      Ports and harbours are logistic nodes characterized by several types of noise, which can usually occur in a concurrent manner in the same harbour premises: ferries, cruises, fishing and trade ships ...

    • Vertical and Oblique ionospheric soundings over the long haul HF link between Antarctica and Spain 

      Ads, Ahmed Gamal; Bergadà Caramés, Pau; Regué, Joan Ramon; Alsina Pagès, Rosa Maria; Pijoan Vidal, Joan Lluís; Altadill Felip, David; Badia Folguera, David; Graells Castellà, Simó (Radio Science. 2015, Vol. 50, No.9 (Setembre), 2015-09)
      This paper presents a comparative study between the oblique sounding results, theInternational Telecommunication Union Rec533 HF prediction model, and the vertical sounding results of atransequatorial ...

    • Vertical and Oblique ionospheric soundings over the long haul HF link between Antarctica and Spain 

      Ads, Ahmed Gamal; Bergadà Caramés, Pau; Regué, Joan Ramon; Alsina Pagès, Rosa Maria; Pijoan Vidal, Joan Lluís; Altadill Felip, David; Badia Folguera, David; Graells Castellà, Simó (Radio Science. 2015, Vol. 50, No.9 (Setembre), 2015-09)
      This paper presents a comparative study between the oblique sounding results, theInternational Telecommunication Union Rec533 HF prediction model, and the vertical sounding results of atransequatorial ...