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Upper-Bounding Rate Distortion Functions based on the Minimum Mean-Square Error

Authors:

Meik Dörpinghaus, Matthias Rüngeler, and Rudolf Mathar

Book Title:

International Zurich Seminar on Communications

Venue:

Zurich, Switzerland

Event Date:

29.2.-2.3.2012

Organization:

IEEE

Date:

Feb. 2012

URL:

10.3929/ethz-a-007071675

Language:

English

Abstract

We derive a new upper bound on the rate distortion function for arbitrary memoryless sources, which is based on the relation between mutual information and minimum mean-square error discovered by Guo et al. This upper bound is in general tighter than the well known upper bound given by the rate distortion function of a Gaussian source with an equal variance found by Shannon and becomes tight for Gaussian sources. We evaluate the new upper bound for various source distributions and compare it to the Shannon lower and upper bound and to the rate distortion function calculated with the Blahut-Arimoto algorithm. This shows that the new upper bound is quite tight.

A tool to calculate the new upper bound on the rate distortion function can be found here.

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