Repeated runout (RRO) zero phase start (ZPS)

摘要

Systems, methods, apparatus, and techniques are provided for producing an estimate of a digital sequence. A continuous-time signal is obtained. The continuous-time signal is sampled with an oversampling factor to produce a discrete-time signal corresponding to the continuous-time signal. A phase offset estimate of the continuous-time signal is produced based on the discrete-time signal. The discrete-time signal is interpolated based on the phase offset estimate to produce an interpolated discrete-time signal. The interpolated discrete-time signal is processed to produce an estimate of a digital sequence.

主权项

1. A method for decoding, the method comprising:
obtaining a continuous-time signal, wherein the continuous-time signal corresponds to a preamble portion of a repeated runout; sampling the continuous-time signal with an oversampling factor to produce a discrete-time signal corresponding to the continuous-time signal; producing a phase offset estimate of the continuous-time signal based on parallel substreams derived from the discrete-time signal; delaying the discrete-time signal at least until the phase offset estimate is produced; interpolating the delayed discrete-time signal based on the phase offset estimate to produce an interpolated discrete-time signal; and processing the interpolated discrete-time signal to produce an estimate of a digital sequence.