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  • Research Article
  • Open Access

Link Adaptation for Framed Multimedia Data Transmission over a DS-CDMA Communication System

EURASIP Journal on Advances in Signal Processing20052005:258790

  • Received: 31 July 2003
  • Published:


In the context of frame-based multimedia wireless transmission, a link adaptation strategy is proposed, assuming that the source decoder may accept some remaining errors at the output of the channel decoder. Based on a target mean bit error rate for erroneous frames, a minimum bit-energy-to-equivalent-noise ratio is chosen. Under this constraint, a new link adaptation criterion is proposed: the maximization of the minimum user's information rate through dynamic spreading gain and power control, allowing to guarantee a transmission for each and every user. An analytical solution to this constrained optimization problem is proposed and its performance is studied in a Rayleigh-fading environment.

Keywords and phrases

  • resource allocation management
  • link adaptation
  • rate and power adaptation
  • multirate DS-CDMA

Authors’ Affiliations

ETIS Laboratory (UMR 8051), ENSEA/University of Cergy-Pontoise/CNRS, 6 Avenue du Ponceau, Cergy-Pontoise Cedex, 95014, France