Volterra analysis of the Non-linear Magneto-Optic Recording Channel

Abstract

The non-linearities arising in the magneto-optical recording write channel are described. Their occurrence result in distortions that are damaging to the information circulating across the channel. For high speed data recording it is imperative to have a precise view of the transmission characteristics of a signal sent across the channel. When the non-linearity is weak, it is possible to perform Volterra series expansions to model the time response and port it to the frequency domain where non-linear distortions are derived from basic principles and applied to a general time dependent recording write channel.