Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1981-12-07
1984-06-19
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
455218, H03K 604
Patent
active
044556640
ABSTRACT:
A unique carrier data operated squelch for use with a demodulator detector for phase shift keyed digital signals. The counts transitions in the PSK signal by examining a narrow time window around the phase transitions. The number of data transitions that fall inside and outside the window is correlated with a predetermined threshold. The inventive carrier squelch permits parameter programmability and is particularly suitable for implemenation utilizing a microprocessor.
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Gillman James W.
Motorola Inc.
Motsinger F. John
Safourek Benedict V.
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