Second-order carrier/symbol sychronizer

Details Second-order carrier/symbol sychronizer Second-order carrier/symbol sychronizer

1987-03-04

1988-11-22

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

329 50, 375 95, 375110, H04L 702

Patent

active

047870966

ABSTRACT:
A synchronizer circuit for recovering a clock signal from synchronizing strobes derived from a modulated dibit phase shift keying (PSK) input signal. A phase detector samples the output of a number controlled oscillator at synchronizing strobe intervals corresponding to zero crossings of the PSK input signal. The phase detector generates binary weighted outputs which are measured of the phase error between the number controlled oscillator and the synchronizing strobes.

REFERENCES:
patent: 4066978 (1978-01-01), Cox, Jr. et al.
patent: 4079329 (1978-03-01), England et al.
patent: 4642574 (1987-02-01), Hofmann
patent: 4686484 (1987-08-01), Otani

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