Carrier Phase Recovery for Optical Coherent M-QAM Communication Systems Using Harmonic Decompositionbased Maximum Loglikelihood Estimators

Trung-Hien Nguyen,Michel Joindot,Pascal Scalart,Mathilde Gay,Laurent Bramerie,Olivier Sentieys,Jean-Claude Simon

Advanced Photonics 2015（2015）

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摘要

A novel feedforward M-QAM carrier phase recovery is presented and validated with both square and cross M-QAM up to 128-QAM. The proposed method outperforms the VVMPE-ML method with reduced computational effort and improved linewidth tolerance.

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m-qam

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