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Type: Journal article
Title: Capacity of very noisy communication channels based on Fisher information
Author: Duan, F.
Chapeau-Blondeau, F.
Abbott, D.
Citation: Scientific Reports, 2016; 6(1)
Publisher: Nature
Issue Date: 2016
ISSN: 2045-2322
Statement of
Fabing Duan, François Chapeau-Blondeau and Derek Abbott
Abstract: We generalize the asymptotic capacity expression for very noisy communication channels to now include coloured noise. For the practical scenario of a non-optimal receiver, we consider the common case of a correlation receiver. Due to the central limit theorem and the cumulative characteristic of a correlation receiver, we model this channel noise as additive Gaussian noise. Then, the channel capacity proves to be directly related to the Fisher information of the noise distribution and the weak signal energy. The conditions for occurrence of a noise-enhanced capacity effect are discussed, and the capacity difference between this noisy communication channel and other nonlinear channels is clarified.
Keywords: Information theory and computation; nonlinear phenomena
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
DOI: 10.1038/srep27946
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