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Unsupervised Hierarchical Clustering for Blind Nonlinear Equalization in WDM Coherent Optical OFDM

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Abstract

We experimentally demonstrate the first Hierarchical clustering-based blind nonlinear equalizer for QPSK WDM-CO-OFDM. Hierarchical clustering outperforms to full-step digital-back propagation and artificial neural networks at 3200 km by up to 1.5 and 1.1 dB, respectively.

© 2017 Optical Society of America

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