Regeneration limit of classical Shannon capacity

Sorokina, M.A. and Turitsyn, S.K. (2014). Regeneration limit of classical Shannon capacity. Nature Communications, 5 ,

Abstract

Since Shannon derived the seminal formula for the capacity of the additive linear white Gaussian noise channel, it has commonly been interpreted as the ultimate limit of error-free information transmission rate. However, the capacity above the corresponding linear channel limit can be achieved when noise is suppressed using nonlinear elements; that is, the regenerative function not available in linear systems. Regeneration is a fundamental concept that extends from biology to optical communications. All-optical regeneration of coherent signal has attracted particular attention. Surprisingly, the quantitative impact of regeneration on the Shannon capacity has remained unstudied. Here we propose a new method of designing regenerative transmission systems with capacity that is higher than the corresponding linear channel, and illustrate it by proposing application of the Fourier transform for efficient regeneration of multilevel multidimensional signals. The regenerative Shannon limit -the upper bound of regeneration efficiency -is derived.

Publication DOI: https://doi.org/10.1038/ncomms4861
Divisions: Engineering & Applied Sciences > Mathematics
Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Engineering & Applied Sciences > Systems analytics research institute (SARI)
Additional Information: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported 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 http://creativecommons.org/licenses/by-nc-sa/3.0/. Funding: UK EPSRC Programme [UNLOC EP/J017582/1]. Supplementary Information: http://www.nature.com/naturecommunications
Full Text Link: http://www.natu ... ncomms4861.html
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2014-05-20
Authors: Sorokina, M.A.
Turitsyn, S.K. ( 0000-0003-0101-3834)

Download

Export / Share Citation


Statistics

Additional statistics for this record