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Nonlinear Mitigation using Carrier Phase Estimation and Digital Backward Propagation in Coherent QAM Transmission

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Abstract

We investigate the performance of carrier phase estimation (CPE) and digital backward propagation (DBP) in compensating fiber nonlinearity for 224Gbps PM-4QAM and PM-16QAM coherent systems. In the presence of CPE, the number of DBP steps can be reduced.

© 2012 Optical Society of America

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