Spectrally Efficient Quadrature Duobinary Coherent Systems With Symbol-Rate Digital Signal Processing

@article{Li2011SpectrallyEQ,
  title={Spectrally Efficient Quadrature Duobinary Coherent Systems With Symbol-Rate Digital Signal Processing},
  author={Jianqiang Li and Zhenning Tao and Huijian Zhang and Weizhen Yan and Takeshi Hoshida and J. C. Rasmussen},
  journal={Journal of Lightwave Technology},
  year={2011},
  volume={29},
  pages={1098-1104}
}
An enhanced digital coherent receiver including a novel blind equalization approach and maximum-likelihood sequence detection (MLSD) is proposed for dual-polarization quadrature duobinary (DP-QDB) systems. In virtue of the compact spectrum of DP-QDB signals approaching Nyquist limit, the equalization is implemented at symbol rate, which relaxes the demand on the sampling speed of analog-to-digital converters (ADCs). The proposed symbol-rate receiver is verified by 43 Gb/s experiments in the… CONTINUE READING
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