Nonlinear Equalization for Optical Communications Based on Entropy-Regularized Mean Square Error

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Jun 02, 2022
Francesca Diedolo, Georg Böcherer, Maximilian Schädler, Stefano Calabró
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An entropy-regularized mean square error (MSE-X) cost function is proposed for nonlinear equalization of short-reach optical channels. For a coherent optical transmission experiment, MSE-X achieves the same bit error rate as the standard MSE cost function and a significantly higher achievable information rate.

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