Adaptive filter using continuous cross-correlation

Details Adaptive filter using continuous cross-correlation Adaptive filter using continuous cross-correlation

1992-05-12

1992-12-01

Nguyen, Long T.

Boots, shoes, and leggings

36472803, G06F 1531, G06F 15336

Patent

active

051684594

ABSTRACT:
Coefficients of an adaptive filter are updated continuously during the filter's normal operation. This is achieved by superimposing on the filter input signal a known noise signal. At the filter's output, a counterpart of this known noise signal is subtracted and the resultant signal is cross correlated with past samples of the noise signal. The filter coefficients are then updated in response to these correlations so as to minimize correlation of the resultant signal with the noise signal.

REFERENCES:
patent: 4038536 (1977-07-01), Feintuch
patent: 4321686 (1982-03-01), Horna
patent: 4377793 (1983-03-01), Horna
patent: 4947362 (1990-08-01), Bui
Honig et al., Adaptive Filters, Excerpt from book, Sections 3.1 and 3.2, pp. 48-53, 1985.

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