Rate Region of the Quadratic Gaussian Two-Encoder Source-Coding Problem

  • Authors:
  • A. B. Wagner;S. Tavildar;P. Viswanath

  • Affiliations:
  • Cornell Univ., Ithaca;-;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2008

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Abstract

We determine the rate region of the quadratic Gaussian two-encoder source-coding problem. This rate region is achieved by a simple architecture that separates the analog and digital aspects of the compression. Furthermore, this architecture requires higher rates to send a Gaussian source than it does to send any other source with the same covariance. Our techniques can also be used to determine the sum-rate of some generalizations of this classical problem. Our approach involves coupling the problem to a quadratic Gaussian ldquoCEO problem.rdquo