Adaptive transversal filter

Details Adaptive transversal filter Adaptive transversal filter

1987-03-20

1988-11-22

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Time domain filters

379411, H03H 1500

Patent

active

047868848

ABSTRACT:
Adaptive transversal filter for use with three-signal level signals, arranged to cancel shifts in the two extreme signal levels relative to the central signal level, information signaling whether the signal level is the central signal level being coupled to first delay means (2) having N+1 connecting terminals, and information signaling whether the signal level is either one or the other extreme signal level being coupled to second delay means (4) having N+1 connecting terminals and comprising first and second coefficient registers (C.sub.OO -C.sub.ON ; C.sub.O -C.sub.sN) each containing N+1 coefficients; means (8, 9) for always multiplying one of the coefficients by an associated connecting terminal signal of the delay means, means (10) for adding together all the multiplying results obtained for providing a cancellation signal and means for always blocking the signal from a connecting terminal of the second delay means when this signal represents neither the one nor the other extreme signal level.

REFERENCES:
patent: 3588385 (1971-06-01), Moyer
patent: 4403245 (1983-09-01), Wischermann
patent: 4431976 (1984-02-01), Voorman
patent: 4476539 (1984-10-01), Tamori et al.

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