Yet Another Proof of the Entropy Power Inequality

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Abstract

Yet another simple proof of the entropy power inequality is given, which avoids both the integration over a path of Gaussian perturbation and the use of Young's inequality with sharp constant or Rényi entropies. The proof is based on a simple change of variables, is formally identical in one and several dimensions, and easily settles the equality case.

Original languageEnglish
Article number7867063
Pages (from-to)3595-3599
Number of pages5
JournalIEEE Transactions on Information Theory
Volume63
Issue number6
DOIs
Publication statusPublished - 1 Jun 2017
Externally publishedYes

Keywords

  • Entropy power inequality
  • Gaussian variables
  • differential entropy
  • optimal transport

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