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A Counterexample to Cover's 2P Conjecture on Gaussian Feedback Capacity

Young-Han Kim

cs.ITarXiv:cs/0511019

Abstract

We provide a counterexample to Cover's conjecture that the feedback capacity CFB of an additive Gaussian noise channel under power constraint P be no greater than the nonfeedback capacity C of the same channel under power constraint 2P, i.e., CFB(P) C(2P).

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