Automatic adaptive equalizer

Details Automatic adaptive equalizer Automatic adaptive equalizer

1984-04-19

1987-01-20

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

333 18, 333 28R, H03H 730, H03K 5159

Patent

active

046384952

ABSTRACT:
In order to remove at least one of amplitude and delay distortions which tend to occur during signal transmission, the invention features circuitry wherein a received IF digital signal is fed through an equalizer circuit to a demodulator and wherein the demodulator outputs a series of data and error signals to a control signal generator. The control signal generator produces in-phase and quadrature control signals which are appropriately added and subtracted and subsequently averaged in an adder and subtracter circuit before being applied to a series of equalizers in the equalizer circuit.

REFERENCES:
patent: 3868576 (1975-02-01), Bagdasarjanz et al.
patent: 4003006 (1977-01-01), Mandeville et al.
patent: 4251782 (1981-02-01), Bynum
patent: 4330861 (1982-05-01), Impallomeni et al.
patent: 4333063 (1982-06-01), Ryu et al.
patent: 4453256 (1984-06-01), Ryu

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