Optimizing detector target polynomials in read/write...

Details Optimizing detector target polynomials in read/write... Optimizing detector target polynomials in read/write...

2005-04-19

2008-09-09

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S263000

Reexamination Certificate

active

07424074

ABSTRACT:
Embodiments of the invention provide techniques for optimizing the detector target polynomials in read/write channels to achieve the best error rate performance in recording devices. In one embodiment, a method of obtaining a detector target polynomial of a read/write channel to achieve best error rate performance in a recording device comprises: providing an initial detector target for the read/write channel; measuring a noise autocorrelation of the read/write channel at the output of equalizer using channel hardware; computing a noise autocorrelation at the output of the 1ststage target based on the measured noise autocorrelation of the read/write channel at the output of equalizer; calculating optimal coefficients for the noise whitening filter; and obtaining the optimal detector target polynomial of the read/write channel using the calculated coefficients for noise whitening filter.

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patent: 2003/0123364 (2003-07-01), Nakajima et al.

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