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Path Integral Approach to Nondispersive Optical Fiber Communication Channel

by Aleksei V. Reznichenko 1,2,*,† and Ivan S. Terekhov 1,2,*,†
1
Theoretical Department, Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences, 630090 Novosibirsk, Russia
2
Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Entropy 2020, 22(6), 607; https://doi.org/10.3390/e22060607
Received: 29 April 2020 / Revised: 22 May 2020 / Accepted: 27 May 2020 / Published: 29 May 2020
(This article belongs to the Special Issue Information Theory of Optical Fiber)
In the present paper we summarize the methods and results of calculations for the theoretical informational quantities obtained in our works for the nondispersive optical fiber channel. We considered two models: the per-sample model and the model where the input signal depends on time. For these models we found the approach for the calculation of the mutual information exactly in the nonlinearity parameter but for the large signal-to-noise power ratio. Using this approach for the per-sample model we found the lower bound of the channel capacity in the intermediate power range. View Full-Text
Keywords: nonlinear optical fiber channel with zero dispersion; channel capacity; path integral formalism nonlinear optical fiber channel with zero dispersion; channel capacity; path integral formalism
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Reznichenko, A.V.; Terekhov, I.S. Path Integral Approach to Nondispersive Optical Fiber Communication Channel. Entropy 2020, 22, 607.

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