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Vector Gaussian Two-Terminal Source Coding

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2 Author(s)
Jia Wang ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China ; Jun Chen

We derive a lower bound on each supporting line of the rate region of the vector Gaussian two-terminal CEO problem, which is a special case of the indirect vector Gaussian two-terminal source coding problem. The key technical ingredient is a new extremal inequality. It is shown that the lower bound coincides with the Berger-Tung upper bound in the high-resolution regime. Similar results are derived for the direct vector Gaussian two-terminal source coding problem.

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Information Theory, IEEE Transactions on  (Volume:59 ,  Issue: 6 )