Gray-Encoded Set-Partition 8QAM for Per-wavelength 200-Gb/s Application

@article{Peng2018GrayEncodedS8,
  title={Gray-Encoded Set-Partition 8QAM for Per-wavelength 200-Gb/s Application},
  author={Wei-ren Peng and Yanjun Zhu and An Qi Li and Yan Cui and Yusheng Bai},
  journal={2018 Optical Fiber Communications Conference and Exposition (OFC)},
  year={2018},
  pages={1-3}
}
A simple Gray-encoding scheme, using a pair of small-sized tables, to reduce the non-Gray penalty for set-partition 8QAM is demonstrated. The experimental results show that a 42.3-GBd PDM-SP-8QAM signal, for 200-Gb/s per channel use, can exhibit ∼0.5-dB OSNR benefit with this encoding method.