• Digital Predistortion of Power Amplifier Non-Linearity Applied to CCSDS/DVB-S2 Satellite Telemetry

      Guérin, Alexandre; Lesthievent, Guy; Millerioux, Jean-Pierre; Sombrin, Jacques; Giraud, Xavier; Bellocq, Philippe; Midan, Emmanuel; Oster, Jacques; Centre National d'Etudes Spatiales (CNES); NOLIPLA; et al. (International Foundation for Telemetering, 2013-10)
      The CNES (French Space Agency) has studied memoryless predistortion techniques for power amplifier nonlinearity of satellite payload telemetry. These techniques are applied to high order modulations taken from the DVB-S2 standard and the associated CCSDS blue book. An easy-to-implement calibration method was also developed. The predistortion was implemented at two times the symbol rate after Square Root Raised Cosine shaping on a breadboard model of a 16APSK modulator associated to a Solid State Power Amplifier. It allows to reduce the amplifier back-off and thus to increase the power added efficiency for an equivalent signal quality.