A modeling for PR channel in a perpendicular magnetic recording using AR model is studied. The AR model is constructed from the actual channel outputs obtained by a read/write experiment using a spinstand. The signal and noise spectra, the distributions of signal level, the error rate performances, and the error patterns for PR channel model are obtained. The results show that the characteristics agree well with those of the actual channel. It is also shown that a model of read/write channel is obtained by adding the reverse characteristic of equalizer to PR channel model.
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