TR2012-004

Fractionally-Spaced Equalizer Based on High-Order Statistics in Nonlinear Fiber Optics


    •  Koike-Akino, T.; Duan, C.; Parsons, K.; Kojima, K.; Yoshida, T.; Sugihara, T.; Mizuochi, T., "Fractionally-Spaced Equalizer Based on High-Order Statistics in Nonlinear Fiber Optics", IEICE Optical Communication Systems (OCS), January 2012, vol. 111, pp. 17-22.
      BibTeX Download PDF
      • @inproceedings{Koike-Akino2012jan,
      • author = {Koike-Akino, T. and Duan, C. and Parsons, K. and Kojima, K. and Yoshida, T. and Sugihara, T. and Mizuochi, T.},
      • title = {Fractionally-Spaced Equalizer Based on High-Order Statistics in Nonlinear Fiber Optics},
      • booktitle = {IEICE Optical Communication Systems (OCS)},
      • year = 2012,
      • volume = 111,
      • number = 411,
      • pages = {17--22},
      • month = jan,
      • url = {http://www.merl.com/publications/TR2012-004}
      • }
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  • Research Areas:

    Communications, Signal Processing


Fiber non-linearity has become a major limiting factor to realize ultra-high- speed optical communications. We propose a fractionally-spaced equalizer which exploits a trained high-order statistics (mean, variance, skewness, etc.) to deal with data-pattern dependent nonlinear impairments in fiber- optic communications. The computer simulation reveals that the proposed 3-tap equalizer improves Q-factor by more than 2 dB for long-haul transmissions of 5,230km distance and 40 Gbps data rate. We also demonstrate that the joint use of a digital back propagation (DBP) and the proposed equalizer offers an additional 12 dB performance improvement due to the channel shortening gain. A performance in beyond 100 Gbps high-speed transmissions is evaluated as well.