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On embedded scalable code stream of minimum expected distortion for variable rate channels

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2 Author(s)
Dumitrescu, S. ; Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada ; Xiaolin Wu

We consider the problem of constructing an embedded scalable code stream from a given tree structured quantizer (TSQ) to minimize the expected distortion weighted over a range of operational rates. If the rate weighting function is exponential, the problem is solvable by a simple algorithm reminiscent to merge sort. The complexity of the algorithm is O(NlogN) where N is the number of internal nodes of the corresponding quantizer tree.

Published in:

Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on

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