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Zero-error instantaneous coding of correlated sources with length constraints is NP-complete

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2 Author(s)
Yan, Y.-O. ; MathWorks Inc., Natick, MA, USA ; Berger, T.

It is well known that the Kraft inequality gives a necessary and sufficient condition on the codeword lengths of a zero-error instantaneous code for a single source. However, generalization for two correlated sources is nontrivial. We show that in the Slepian-Wolf configuration, even if one source is known at the decoder, designing a zero-error instantaneous code with given codeword lengths for the other source is NP-complete.

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Information Theory, IEEE Transactions on  (Volume:52 ,  Issue: 4 )