Skip to content


  • 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: 21 February 2005


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 managementlink adaptationrate and power adaptationmultirate DS-CDMA

Authors’ Affiliations

ETIS Laboratory (UMR 8051), ENSEA/University of Cergy-Pontoise/CNRS, Cergy-Pontoise Cedex, France


© Poulliat et al. 2005

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.