Pulse or digital communications – Repeaters – Testing
Patent
1981-12-07
1984-06-26
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 83, 375110, 375120, 329123, H03D 318
Patent
active
044570058
ABSTRACT:
An improved digital demodulator and detector for phase-shift-keyed digital signals providing coherent detection with high sensitivity and stability on noisy channels. Digital sampling is used in conjunction with a digital phase locked loop system in which basic time increments are subtracted or added to an equilibrium timing loop to provide simultaneous carrier demodulation and bit recovery.
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Burke Timothy M.
Noble Scott W.
Gillman James W.
Griffin Robert L.
Motorola Inc.
Motsinger F. John
Roney Ed
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