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A low-complexity one-step digital back-propagation (DBP) scheme is proposed to mitigate intrachannel and interchannel fiber nonlinearities in high-capacity single span transmissions. Compared with conventional coherent receivers, the only additional calculation is a low-complexity nonlinear phase noise compensation stage operated between bulk chromatic dispersion (CD) compensation and adaptive equalizer...
We numerically show that the laser linewidth tolerance of Stokes-vector direct detection systems is limited by equalization-enhanced phase noise (EEPN). We also demonstrate the mitigation of the EEPN influence using maximum likelihood phase compensation.
We present advanced flexible modulation formats and reduced-complexity digital nonlinear compensation schemes to increase the capacity of next generation optical networks.
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