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- W768181013 abstract "We first present an explicit formula R(D) for the rate-distortion function (RDF) of the vector Gaussian re- mote Wyner-Ziv problem with covariance matrix distortion constraints. To prove the lower bound, we use a particular variant of joint matrix diagonalization to establish a notion of the minimum of two symmetric positive-definite matrices. We then show that from the resulting RDF, it is possible to derive RDFs with different distortion constraints. Specifically, we rederive the RDF for the vector Gaussian remote Wyner-Ziv problem with the mean-squared error distortion constraint, and a rate-mutual information function. This is done by minimizing R(D) subject to appropriate constraints on the distortion matrix D. The key idea to solve the resulting minimization problems is to lower- bound them with simpler optimization problems and show that they lead to identical solutions. We thus illustrate the generality of the covariance matrix distortion constraint in the Wyner-Ziv setup." @default.
- W768181013 created "2016-06-24" @default.
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- W768181013 date "2015-04-05" @default.
- W768181013 modified "2023-10-16" @default.
- W768181013 title "On the Covariance Matrix Distortion Constraint for the Gaussian Wyner-Ziv Problem" @default.
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