Phase-shift keyed carrier recovery

Details Phase-shift keyed carrier recovery Phase-shift keyed carrier recovery

1987-10-19

1989-05-09

Mis, David

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329107, 329110, 329126, 375 77, 375 86, H03D 318

Patent

active

048292605

ABSTRACT:
Data transmitted over an n-state phase-shift keyed transmission system which has an inherently suppressed carrier is recovered using digital processing techniques. The received signal is digitized and a digital representation of the suppressed carrier signal recovered directly from the digital representation of the received signal. The digital representation of the received signal is interacted with the digital representation of the carrier signal to recover the transmitted data. A preferred aspect recovers the carrier by subjecting the digital representation of the received signal to a non-linear processing step to generate the nth order harmonic.

REFERENCES:
patent: 4635279 (1987-01-01), Nossen

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