Magnetic recording channel model with intertrack interference

The authors propose a multichannel model for saturation recording which includes interference from adjacent tracks. In saturation recording, the signal is recorded as a series of flux reversals on the medium. Each track is a pulse amplitude modulated (PAM) signal, where the pulse shape is the system response to a flux reversal. The old information (OI) in each guard band is also modeled as a single PAM signal. The side reading properties of the head are modeled using the reciprocity integral to compute flux transition response. Using a result of D.A. Lindholm (1977) to represent the field of an inductive head, the authors compute specific channel models for various values of misregistration. They determine the pulse shape as a function of the head-to-track registration for each adjacent track and OI track