Relative entropy at the channel output of a capacity-achieving code

In this paper we establish a new inequality tying together the coding rate, the probability of error and the relative entropy between the channel and the auxiliary output distribution. This inequality is then used to show the strong converse, and to prove that the output distribution of a code must...

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Bibliographic Details
Main Authors: Polyanskiy, Yury, Verdu, Sergio
Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Format: Article
Language:en_US
Published: Institute of Electrical and Electronics Engineers (IEEE) 2013
Online Access:http://hdl.handle.net/1721.1/79672
https://orcid.org/0000-0002-2109-0979