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Dual-Stage Frequency Domain Blind Equalization for Long-Haul Coherent Polarization-Multiplexed QPSK and 16-QAM Systems

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We present a dual-stage equalization method for long-haul coherent polarization-multiplexed systems. Blind CD compensation and adaptive multi-modulus equalization are both implemented in frequency-domain to allow zero overhead transmission with least complexity. Experiment is conducted to show good performance for both QPSK and 16-QAM systems.

© 2012 Optical Society of America

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