Perturbation-based FEC-assisted Iterative Nonlinearity Compensation for WDM Systems
Edson P. da Silva, Metodi P. Yankov, Francesco Da Ros, Toshio Morioka,, Leif K. Oxenl{\o}we
TL;DR
This paper introduces a perturbation-based nonlinear compensation scheme for WDM systems that uses FEC decoder feedback to significantly improve performance, approaching ideal data-aided bounds through simulations and experiments.
Contribution
The paper presents a novel FEC-assisted perturbation-based nonlinear compensation method that outperforms existing single-channel digital backpropagation in WDM systems.
Findings
FEC feedback improves nonlinear compensation performance.
The scheme operates close to data-aided performance bounds.
Experimental results outperform single-channel digital backpropagation.
Abstract
A perturbation-based nonlinear compensation scheme assisted by a feedback from the forward error correction (FEC) decoder is numerically and experimentally investigated. It is shown by numerical simulations and transmission experiments that a feedback from the FEC decoder enables improved compensation performance, allowing the receiver to operate very close to the full data-aided performance bounds. The experimental analysis considers the dispersion uncompensated transmission of a 5 x 32 GBd WDM system with DP-16QAM and DP-64QAM after 4200 km and 1120 km, respectively. The experimental results show that the proposed scheme outperforms single-channel digital backpropagation. A perturbation-based nonlinear compensation scheme assisted by a feedback from the forward error correction (FEC) decoder is numerically and experimentally investigated. It is shown by numerical simulations and…
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