A support vector machine (SVM)-based classification nonlinear equalizer (NLE) is demonstrated, for the first time, in coherent optical orthogonal frequency-division multiplexing (CO-OFDM). For a 40-Gb/s 16 quadrature amplitude modulated (16QAM) CO-OFDM system at 400 km of transmission, SVM-NLE reduces the fiber-induced nonlinearity penalty by about 1 dB in comparison to the benchmark artificial-neural-network (ANN)-based and inverse-Volterra-series-transfer-function-based NLEs.
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Nguyen, T., Mhatli, S., Giacoumidis, E., Van Compernolle, L., Wuilpart, M., & Megret, P. (2016). Fiber Nonlinearity Equalizer Based on Support Vector Classification for Coherent Optical OFDM. IEEE Photonics Journal, 8(2), 1-9. https://doi.org/10.1109/JPHOT.2016.2528886