Abstract
One major drawback of coherent optical orthogonal frequency-division multiplexing (CO-OFDM) that hitherto remains unsolved is its vulnerability to nonlinear fiber effects due to its high peak-to-average power ratio. Several digital signal processing techniques have been investigated for the compensation of fiber nonlinearities, e.g., digital back-propagation, nonlinear pre- and post-compensation and nonlinear equalizers (NLEs) based on the inverse Volterra-series transfer function (IVSTF). Alternatively, nonlinearities can be mitigated using nonlinear decision classifiers such as artificial neural networks (ANNs) based on a multilayer perceptron. In this paper, ANN-NLE is presented for a 16QAM CO-OFDM system. The capability of the proposed approach to compensate the fiber nonlinearities is numerically demonstrated for up to 100-Gb/s and over 1000km and compared to the benchmark IVSTF-NLE. Results show that in terms of Q-factor, for 100-Gb/s at 1000km of transmission, ANN-NLE outperforms linear equalization and IVSTF-NLE by 3.2dB and 1dB, respectively.
| Original language | English |
|---|---|
| Title of host publication | PIERS 2015 Prague |
| Subtitle of host publication | Progress in Electromagnetics Research Symposium, proceedings |
| Place of Publication | Cambridge, MA (US) |
| Publisher | Electromagnetics Academy |
| Pages | 2473-2477 |
| Number of pages | 5 |
| ISBN (Print) | 978-1-934142-30-1 |
| Publication status | Published - 2015 |
| Event | Progress in Electromagnetics Research Symposium - Prague, Czech Republic Duration: 6 Jul 2015 → 6 Jul 2015 |
Publication series
| Name | PIERS proceedings |
|---|---|
| Publisher | Electromagnetics Academy |
| ISSN (Print) | 1559-9450 |
| ISSN (Electronic) | 1931-7360 |
Symposium
| Symposium | Progress in Electromagnetics Research Symposium |
|---|---|
| Abbreviated title | PIERS 2015 Prague |
| Country/Territory | Czech Republic |
| City | Prague |
| Period | 6/07/15 → 6/07/15 |
Bibliographical note
Funding: EU 7FP (FP/2007-2013) under grant 318137 (DISCUS).Fingerprint
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