Next-to-leading order corrections to capacity for nondispersive nonlinear optical fiber channel in intermediate power region

Abstract

We consider the optical fiber channel modelled by the nonlinear Shrödinger equation with zero dispersion and additive Gaussian noise. Using Feynman path-integral approach for the model we find corrections to conditional probability density function, output signal distribution, conditional and output signal entropies, and the channel capacity at large signal-to-noise ratio. We demonstrate that the correction to the channel capacity is positive for large signal power. Therefore, this correction increases the earlier calculated capacity for a nondispersive nonlinear optical fiber channel in the intermediate power region.

arXiv comment9 pages, 2 figures

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Cited by in corpus (4)

• Bounds on the Per-Sample Capacity of Zero-Dispersion Simplified Fiber-Optical Channel Models
• The $\log \log$ growth of channel capacity for nondispersive nonlinear optical fiber channel in intermediate power range. Extension of the model
• Investigation of Nonlinear Communication Channel with Small Dispersion via Stochastic Correlator Approach
• Optimal input signal distribution for nonlinear optical fiber channel with small Kerr nonlinearity