DSP-Based Satellite CDMA Modem: A Low Complexity Implementation

  • Authors:

  • Andrea Conti;Davide Dardari

  • Affiliations:

  • DEIS, IEIIT-BO/CNR, CNIT, University of Bologna, V. le Risorgimento 2, 40136 Bologna, Italy E-mail: aconti@deis.unibo.it;DEIS, IEIIT-BO/CNR, CNIT, University of Bologna, V. le Risorgimento 2, 40136 Bologna, Italy E-mail: ddardari@deis.unibo.it

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2003

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Abstract

This paper presents a reliable and low complexity scheme foracquisition, tracking and frequency offset recovery for aDSP-based satellite CDMA modem. An analysis of the performance, interms of false alarm probability, detection probability and meanacquisition time, is carried out as a function of the complexityand the level of interference. The proposed scheme, based on adedicated frame format, appears able to cope with the DSPcomplexity constraint also for high levels of interference. A DSPimplementation and numerical results, obtained by means ofanalytical evaluations and measurements on a real test-bed, aregiven.