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Branch and bound algorithms for rate-distortion optimized media streaming

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3 Author(s)
Roder, M. ; Dept. of Comput. & Inf. Sci., Konstanz Univ., Germany ; Cardinal, J. ; Hamzaoui, R.

We consider the problem of rate-distortion optimized streaming of packetized multimedia data over a single quality-of-service network using feedback and retransmissions. For a single data unit, we prove that the problem is NP-hard and provide efficient branch and bound algorithms that are much faster than the previously best solution based on dynamic programming. For a group of interdependent data units, we show how to compute optimal solutions with branch and bound algorithms. The branch and bound algorithms for a group of data units are much slower than the current state of the art, a heuristic technique known as sensitivity adaptation. However, in many real-world situations, they provide a significantly better rate-distortion performance.

Published in:

Multimedia, IEEE Transactions on  (Volume:8 ,  Issue: 1 )