PERFORMANCE OF ADAPTIVE VOLTERRA EQUALIZERS ON NONLINEAR MAGNETIC RECORDING CHANNELS

We examine the error rate performance of various equalizers on two non linear channel models which have been proposed recently in the literat ure: a partial erasure model and a Volterra model. We find that when t he noise is appreciable the performance of the Volterra equalizer is o nly slightly better than that of a linear equalizer. Our results also demonstrate that write precompensation for transition shift, eliminati on is to be preferred over post-compensation.