Title :
Artificial Neural Network Nonlinear Equalizer for Coherent Optical OFDM
Author :
Jarajreh, Mutsam A. ; Giacoumidis, E. ; Aldaya, Ivan ; Son Thai Le ; Tsokanos, Athanasios ; Ghassemlooy, Zabih ; Doran, N.J.
Author_Institution :
Opt. Wireless Commun. Group, Univ. of Northumbria, Newcastle upon Tyne, UK
Abstract :
We propose a novel low-complexity artificial neural network (ANN)-based nonlinear equalizer (NLE) for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) and compare it with the recent inverse Volterra-series transfer function (IVSTF)-based NLE over up to 1000 km of uncompensated links. Demonstration of ANN-NLE at 80-Gb/s CO-OFDM using 16-quadrature amplitude modulation reveals a Q -factor improvement after 1000-km transmission of 3 and 1 dB with respect to the linear equalization and IVSTF-NLE, respectively.
Keywords :
OFDM modulation; neural nets; quadrature amplitude modulation; 16-quadrature amplitude modulation; CO-OFDM; IVSTF-NLE; Q -factor improvement; coherent optical orthogonal frequency-division multiplexing; novel low-complexity ANN-based NLE; novel low-complexity artificial neural network-based nonlinear equalizer; Artificial neural networks; Equalizers; Nonlinear optics; OFDM; Optical fiber networks; Optical fibers; Q-factor; OFDM; Optical communication; coherent optical fiber transmission; functional link artificial neural networks; nonlinear equalizer;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2375960
