Why Constant-Composition Codes Reduce Nonlinear Interference Noise
Reza Rafie Borujeny, Frank Kschischang
TL;DR
This paper explains how constant-composition codes and carrier recovery algorithms improve signal-to-noise ratio in wavelength-division multiplexed communication by reducing nonlinear interference noise, based on a time-domain perturbation model.
Contribution
It provides a theoretical explanation for the benefits of constant-composition codes and carrier recovery algorithms in mitigating nonlinear interference noise in optical communication.
Findings
Constant-composition codes improve SNR over independent constellation selection.
Carrier recovery algorithms achieve similar gains without using constant-composition codes.
The time-domain perturbation model explains the mechanisms behind these improvements.
Abstract
A time-domain perturbation model of the nonlinear Schrodinger equation is used to study wavelength-division multiplexed communication over a single polarization. The model explains (a) why constant-composition codes offer an improvement in signal to noise ratio compared with independent and uniform selection of constellation points and (b) why similar gains are obtained using carrier recovery algorithms even without using constant-composition codes.
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Taxonomy
TopicsOptical Network Technologies · Semiconductor Lasers and Optical Devices · Advanced Photonic Communication Systems