Optimal input signal distribution and capacity for nondispersive nonlinear optical fiber channel at large signal to noise ratio


We consider a model nondispersive nonlinear optical fiber channel with additive Gaussian noise at large SNR (signal-to-noise ratio) in the intermediate power region. Using Feynman path-integral technique we find the optimal input signal distribution maximizing the channel's per-sample mutual information. The finding of the optimal input signal distribution allows us to improve previously known estimates for the channel capacity. We show that in the intermediate power regime the per-sample mutual information for the optimal input signal distribution is greater than the per-sample mutual information for the Gaussian and half-Gaussian input signal distributions.

Publication DOI: https://doi.org/10.1117/12.2307299
Divisions: Engineering & Applied Sciences > Aston Institute of Photonics Technology
Engineering & Applied Sciences > Systems analytics research institute (SARI)
Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Additional Information: Copyright 2018 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Event Title: Nonlinear Optics and its Applications 2018
Event Type: Other
Event Dates: 2018-04-23 - 2018-04-25
Uncontrolled Keywords: Channel capacity,Path-integral,Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Computer Science Applications,Applied Mathematics,Electrical and Electronic Engineering
ISBN: 9781510618947
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2018-05-14
Accepted Date: 2018-01-26
Authors: Terekhov, I. S.
Reznichenko, A. V.
Turitsyn, S. K. ( 0000-0003-0101-3834)



Version: Published Version

| Preview

Export / Share Citation


Additional statistics for this record