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Reduction of Nonlinear Inter-Subcarrier Intermixing in Coherent Optical OFDM by a Fast Newton-based Support Vector Machine Nonlinear Equalizer. / Mhatli, Sofien; Stephens, Marc F. C. ; Tsokanos, Athanasios; Wei, Jinlong ; McCarthy, Mary E.; Doran, Nick J. ; Ellis , Andrew D. .

In: Journal of Lightwave Technology, Vol. 35, No. 12, 15.06.2017, p. 2391-2397.

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Mhatli, Sofien ; Stephens, Marc F. C. ; Tsokanos, Athanasios ; Wei, Jinlong ; McCarthy, Mary E. ; Doran, Nick J. ; Ellis , Andrew D. . / Reduction of Nonlinear Inter-Subcarrier Intermixing in Coherent Optical OFDM by a Fast Newton-based Support Vector Machine Nonlinear Equalizer. In: Journal of Lightwave Technology. 2017 ; Vol. 35, No. 12. pp. 2391-2397.

Bibtex

@article{2d2287506a9948fd9c7235611b36911e,
title = "Reduction of Nonlinear Inter-Subcarrier Intermixing in Coherent Optical OFDM by a Fast Newton-based Support Vector Machine Nonlinear Equalizer",
abstract = "A fast Newton-based support vector machine (N-SVM) nonlinear equalizer (NLE) is experimentally demonstrated, for the first time, in 40 Gb/s 16-quadrature amplitude modulated coherent optical orthogonal frequency division multiplexing at 2000 km of transmission. It is shown that N-SVM-NLE extends the optimum launched optical power by 2 dB compared to the benchmark Volterra-based NLE. The performance improvement by N-SVM is due to its ability of tackling both deterministic fiber-induced nonlinear effects and the interaction between nonlinearities and stochastic noises (e.g. polarization-mode dispersion). N-SVM is more tolerant to inter-subcarrier nonlinear crosstalk effects than Volterra-based NLE, especially when applied across all subcarriers simultaneously. In contrast to the conventional SVM, the proposed algorithm is of reduced classifier complexity offering lower computational load and execution time. For a low C -parameter of 4 (a penalty parameter related to complexity), an execution time of 1.6 sec is required for N-SVM to effectively mitigate nonlinearities. Compared to conventional SVM, the computational load of N-SVM is ~6 times lower.",
keywords = "coherent optical OFDM, coherent detection, nonlinearity mitigation, support vector machines",
author = "Sofien Mhatli and Stephens, {Marc F. C.} and Athanasios Tsokanos and Jinlong Wei and McCarthy, {Mary E.} and Doran, {Nick J.} and Ellis, {Andrew D.}",
note = "This is an Open Access article. {\textcopyright} 2017 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information.",
year = "2017",
month = jun,
day = "15",
doi = "10.1109/JLT.2017.2678511",
language = "English",
volume = "35",
pages = " 2391--2397",
journal = "Journal of Lightwave Technology",
issn = "0733-8724",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "12",

}

RIS

TY - JOUR

T1 - Reduction of Nonlinear Inter-Subcarrier Intermixing in Coherent Optical OFDM by a Fast Newton-based Support Vector Machine Nonlinear Equalizer

AU - Mhatli, Sofien

AU - Stephens, Marc F. C.

AU - Tsokanos, Athanasios

AU - Wei, Jinlong

AU - McCarthy, Mary E.

AU - Doran, Nick J.

AU - Ellis , Andrew D.

N1 - This is an Open Access article. © 2017 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information.

PY - 2017/6/15

Y1 - 2017/6/15

N2 - A fast Newton-based support vector machine (N-SVM) nonlinear equalizer (NLE) is experimentally demonstrated, for the first time, in 40 Gb/s 16-quadrature amplitude modulated coherent optical orthogonal frequency division multiplexing at 2000 km of transmission. It is shown that N-SVM-NLE extends the optimum launched optical power by 2 dB compared to the benchmark Volterra-based NLE. The performance improvement by N-SVM is due to its ability of tackling both deterministic fiber-induced nonlinear effects and the interaction between nonlinearities and stochastic noises (e.g. polarization-mode dispersion). N-SVM is more tolerant to inter-subcarrier nonlinear crosstalk effects than Volterra-based NLE, especially when applied across all subcarriers simultaneously. In contrast to the conventional SVM, the proposed algorithm is of reduced classifier complexity offering lower computational load and execution time. For a low C -parameter of 4 (a penalty parameter related to complexity), an execution time of 1.6 sec is required for N-SVM to effectively mitigate nonlinearities. Compared to conventional SVM, the computational load of N-SVM is ~6 times lower.

AB - A fast Newton-based support vector machine (N-SVM) nonlinear equalizer (NLE) is experimentally demonstrated, for the first time, in 40 Gb/s 16-quadrature amplitude modulated coherent optical orthogonal frequency division multiplexing at 2000 km of transmission. It is shown that N-SVM-NLE extends the optimum launched optical power by 2 dB compared to the benchmark Volterra-based NLE. The performance improvement by N-SVM is due to its ability of tackling both deterministic fiber-induced nonlinear effects and the interaction between nonlinearities and stochastic noises (e.g. polarization-mode dispersion). N-SVM is more tolerant to inter-subcarrier nonlinear crosstalk effects than Volterra-based NLE, especially when applied across all subcarriers simultaneously. In contrast to the conventional SVM, the proposed algorithm is of reduced classifier complexity offering lower computational load and execution time. For a low C -parameter of 4 (a penalty parameter related to complexity), an execution time of 1.6 sec is required for N-SVM to effectively mitigate nonlinearities. Compared to conventional SVM, the computational load of N-SVM is ~6 times lower.

KW - coherent optical OFDM

KW - coherent detection

KW - nonlinearity mitigation

KW - support vector machines

U2 - 10.1109/JLT.2017.2678511

DO - 10.1109/JLT.2017.2678511

M3 - Article

VL - 35

SP - 2391

EP - 2397

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 12

ER -