Adaptation and training of digital finite impulse response filte

Details Adaptation and training of digital finite impulse response filte Adaptation and training of digital finite impulse response filte

1992-08-27

1995-01-10

Envall, Jr., Roy N.

Boots, shoes, and leggings

375 14, 375 18, 360 40, G06F 738, H03H 730

Patent

active

053813596

ABSTRACT:
A digital adaptive finite impulse response filter circuit is provided for a PR4,ML sampled data channel including an analog to digital sampler for providing raw digital samples of data to the filter circuit and a sampled data detector for detecting coded data from conditioned digital samples received from the filter circuit. The filter circuit comprises a multi-tap transversal filter structure wherein each tap is connected to receive a selected coefficient, a source of a plurality of coefficients for each tap, a coefficient selector connected to the source to receive the plurality of coefficients and to provide a selected coefficient to each tap of the transversal filter structure, and a control circuit for controlling the coefficient selector and the source for providing each of the selected coefficients to a corresponding tap of the transversal filter structure. Training and adaptation methods and circuits for adapting the filter structure are also described.

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