Feedback does not increase the capacity of discrete channels with additive noise

Authors:
F. Alajaji
Affiliations:
Dept. of Electr. Eng., Maryland Univ., College Park, MD
Venue:
IEEE Transactions on Information Theory
Year:
2006

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Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing

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Abstract

We consider discrete-time finite alphabet channels with additive random noise. We show that output feedback does not increase the capacity of such channels. This result holds in the most general case; i.e., for arbitrary additive noise processes