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EURASIP Journal on Applied Signal Processing 2005:2, 153–166 c ○ 2005 Hindawi Publishing Corporation Link Adaptation for Framed Multimedia Data Transmission over a DS-CDMA Communication System

By Charly Poulliat, Inbar Fijalkow and David Declercq


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

Topics: resource allocation management, link adaptation, rate and power adaptation, multirate DS-CDMA
Year: 2004
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