Phase-jump detector and corrector method and apparatus for phase

Details Phase-jump detector and corrector method and apparatus for phase Phase-jump detector and corrector method and apparatus for phase

1975-07-31

1977-10-04

Curtis, Marshall M.

Telegraphy

Systems

Alternating or pulsating current

325344, 325145, H04L 2724

Patent

active

040525570

ABSTRACT:
In a phase-modulated communication system utilizing voice-band communication channels wherein phase-jumps may be experienced, a phase-jump detector indicates the occurrence of such phase-jumps. A phase-jump corrector responds to the persistence of a phase-jump condition by correcting for it without requiring shut-down and complete reequalization of the transmission channel. Monitoring of the incoming signal for phase-jump occurrence provides a convenient signal quality indication that represents the magnitude of the error in the X and Y components of each received symbol.

REFERENCES:
patent: 3147441 (1964-09-01), Adler
patent: 3663754 (1972-05-01), Hanna, Jr.
patent: 3739277 (1973-06-01), Schneider et al.
patent: 3753114 (1973-08-01), Burley
patent: 3938052 (1976-02-01), Glasson et al.

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