Pulse code demodulator for frequency shift keyed data

Details Pulse code demodulator for frequency shift keyed data Pulse code demodulator for frequency shift keyed data

1980-09-25

1983-03-29

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

375 82, 375 88, 34082558, H04L 2714

Patent

active

043785263

ABSTRACT:
A demodulator which directly decodes Pulse Code Modulated Signals initially modulated by Frequency Shift Keyed Data by determining the period between zero crossings. The instant of the zero crossing between PCM signal samples is determined by interpolation from the magnitude of the samples immediately preceding and succeeding the zero crossing upon detection of a change in the sign bit of the PCM signal.

REFERENCES:
patent: 3908169 (1975-09-01), Tong

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