Determination of channel capacity and optimum source distribution of fiber-optic channel

Jianyong Zhang, Ivan B Djordjevic, Hussam G. Batshon, Shui Sheng Jian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We describe a general engineering method to compute a tighter bound on fiber-optic channel capacity and the optimum source distribution. This method first determines the conditional probability density functions of an optical fiber channel by evaluating histograms, or by instantons or edgeworth expansion approach. Starting from any source distribution, we generate source and output sequences to estimate the information rate and calculate A-posteriori State-Transition Weight. The optimum source distribution is obtained by constrained stochastic Arimoto-Blahut algorithm. We apply the proposed methods on a 64 iterative polarization quantization source. The optimized capacity per single-polarization per channel is higher than achievable information rate. As the transmission distance increases the optimized distribution is changed from Gaussian-like distribution to non-Gaussian-like distribution. This is due to the fact that the nonlinear interaction of ASE noise and Kerr nonlinearities cannot be compensated for by back-propagation method.

Original languageEnglish (US)
Title of host publication2010 12th International Conference on Transparent Optical Networks, ICTON 2010
DOIs
Publication statusPublished - 2010
Event2010 12th International Conference on Transparent Optical Networks, ICTON 2010 - Munich, Germany
Duration: Jun 27 2010Jul 1 2010

Other

Other2010 12th International Conference on Transparent Optical Networks, ICTON 2010
CountryGermany
CityMunich
Period6/27/107/1/10

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Keywords

  • Capacity achieving distribution
  • Channel capacity
  • Fiber optic channel

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Zhang, J., Djordjevic, I. B., Batshon, H. G., & Jian, S. S. (2010). Determination of channel capacity and optimum source distribution of fiber-optic channel. In 2010 12th International Conference on Transparent Optical Networks, ICTON 2010 [5549290] https://doi.org/10.1109/ICTON.2010.5549290