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Blind Adaptive Equalization Algorithm Based on Constellation Transformation for DP 16-QAM Systems

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Abstract

We demonstrate a novel blind equalizer based on a constellation transformation, where a 16-QAM signal is mapped into a QPSK constellation. Subsequently, the filter coefficients for an adaptive equalizer are updated using a constant modulus or decision-directed cost function.

© 2013 Optical Society of America

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