Abstract
Nonlinear distortion caused by fiber nonlinearity is a
major performance-limiting factor in advanced optical
communication systems. We proposed a nonlinear
electrical equalization scheme based on the
Wiener–Hammerstein model. Compared with other
popular nonlinear compensation techniques such as the
Volterra model, the Wiener–Hammerstein model
approach has a simpler structure and requires less
calculation. Simulation results are presented to
demonstrate the capability of a Wiener–Hammerstein
model based electrical equalizer used in a coherent
optical orthogonal frequency division multiplexing
system. It is shown that the Wiener–Hammerstein
model based equalizer can significantly reduce nonlinear
distortion and can deliver a performance comparable to
the Volterra model based equalizer.
© 2011 IEEE
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