Error Event Analysis of Partial Response Targets for Perpendicular Magnetic Recording

An analytical method to identify lists of the most probable error events for arbitrary partial response (PR) targets is described. The dominant error events are extracted via a computer search considering not only the minimum distance but also additive white noise amplification and data-dependent transition jitter noise. The method uses an efficient scheme to take into account the effect of data-dependent transition jitter noise. Combining the error event analysis and a multinomial model, approximate sector error rates can be calculated without the need for time-consuming simulations. The results from the analytical method are compared with simulation results.