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Transmitter IQ Mismatch Compensation Based on Second Order Moment Estimation for Coherent Optical M-QAM System

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This paper presents a pilot-aided method to compensate the transmitter IQ mismatch in coherent optical 4/16-QAM system. The IQ unbalanced amplitude and phase parameters are extracted by employing a second order moment estimation algorithm.

© 2016 Optical Society of America

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