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Finite-Horizon FEC-Rate Adaptation for Real-Time Wireless Multimedia

Summary: Finite-Horizon FEC-Rate Adaptation for Real-Time
Wireless Multimedia
Mehmet U. Demircin and Yucel Altunbasak
School of Electrical and Computer Engineering
Georgia Institute of Technology
Atlanta, GA 303320250 USA
Email: {demircin, yucel}@ece.gatech.edu
Abstract-- In this work, we propose an error-control technique
for efficient streaming of packetized multimedia over time-
varying wireless channels. Our objective is to obtain maximum
media presentation quality for a given channel capacity. In the
proposed technique, forward error correction (FEC) redundancy
rate of media packets are optimized based on a distortion model.
Such multimedia-source and channel characteristics as the packet
importance, dependencies, decoding deadlines and channel state
information are utilized in the optimization process. In addition,
we also consider the effect of residual channel resources for
future transmissions on the overall quality. Real-time streaming
simulations with H.263+ video sequences show that the proposed
technique achieves up to 1.8 dB quality improvement over non-


Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology


Collections: Engineering