High speed digital communication receiver

Details High speed digital communication receiver High speed digital communication receiver

1979-06-25

1981-07-28

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375100, 455137, H04B 708

Patent

active

042814111

ABSTRACT:
An improved high speed digital communications diversity receiver using a forward adaptive transversal filter equalizer, having a plurality of weighting sections in each diversity channel to provide a combined weighting signal, wherein the required complex multiplications and correlations needed for weighting purposes are performed at IF frequencies, while the time-delayed combining operations for providing the desired combined weighted output signal are performed at baseband frequencies. Such an arrangement reduces the number of tapped delay lines normally needed for such transversal filter equalizer operation and further reduces the signal losses incurred in operating delay line devices at intermediate frequencies so that fewer large gain-bandwidth product amplifiers are required in the system than the number required in previously available systems using such forward transversal filter equalizers.

REFERENCES:
patent: 2903576 (1959-09-01), Altman
patent: 3659229 (1972-04-01), Milton
patent: 3879664 (1975-04-01), Monsen
patent: 3962637 (1976-06-01), Motley et al.
patent: 4112370 (1978-09-01), Monsen

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