Equalizer adjustment for partial-response maximum-likelihood dis

Details Equalizer adjustment for partial-response maximum-likelihood dis Equalizer adjustment for partial-response maximum-likelihood dis

1992-09-30

1993-12-07

Mai, Tan V.

Boots, shoes, and leggings

G06F 1531

Patent

active

052688488

ABSTRACT:
Apparatus and method for providing equalization adjustment for a finite impulse response (FIR) digital filter are provided in a PRML data channel. A plurality of transformations are defined to transform effective tap weights in a digital filter into modified effective tap weight values by adding each said initial effective tap weight value with a selected cosine equalization adjustment function. A cosine expander circuit is provided for expanding 8-byte compressed equalizations into a 32-byte format and for altering the filter response by a selected cosine equalization adjustment function.

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IBM Technical Disclosure Bulletin, vol. 31, No. 11 Apr. 1989, pp. 450-452.

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