Novel FIR-filter configuration tolerant to fast phase fluctuations in digital coherent receivers for higher-order QAM signals

@article{Mori2012NovelFC,
  title={Novel FIR-filter configuration tolerant to fast phase fluctuations in digital coherent receivers for higher-order QAM signals},
  author={Yasuchika Mori and Chao Zhang and Kazuro Kikuchi},
  journal={OFC/NFOEC},
  year={2012},
  pages={1-3}
}
We propose a novel configuration of FIR filters adapted by the decision-directed LMS algorithm in the digital coherent receiver. Simulations and experiments show its high tolerance to phase noise and frequency offset for 16-QAM signals.