Channel Capacity Calculation at Large SNR and Small Dispersion within Path-Integral Approach

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции


We consider the optical fiber channel modelled by the nonlinear Shrödinger equation with additive white Gaussian noise. Using Feynman path-integral approach for the model with small dispersion we find the first nonzero corrections to the conditional probability density function and the channel capacity estimations at large signal-to-noise ratio. We demonstrate that the correction to the channel capacity in small dimensionless dispersion parameter is quadratic and positive therefore increasing the earlier calculated capacity for a nondispersive nonlinear optical fiber channel in the intermediate power region. Also for small dispersion case we find the analytical expressions for simple correlators of the output signals in our noisy channel.

Язык оригиналаанглийский
Номер статьи012016
Число страниц10
ЖурналJournal of Physics: Conference Series
Номер выпуска1
СостояниеОпубликовано - 5 апр 2018