Serial minimum shift-keyed modem

Details Serial minimum shift-keyed modem Serial minimum shift-keyed modem

1984-04-02

1986-07-15

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 90, 329110, H04L 2710

Patent

active

046010483

ABSTRACT:
An apparatus and method is disclosed of an SMSK/N concept that utilizes a divide-by-N device in the modulator and a multiply-by-N device in the demodulator to provide improved bandwidth efficiency over conventional SMSK devices. This apparatus provides reduced bandwidth without an excessive increase in the power required for transmission.

REFERENCES:
patent: 2977417 (1981-03-01), Doelz et al.
patent: 3668562 (1972-06-01), Fritkin
patent: 3674934 (1972-07-01), Gooding et al.
patent: 3992617 (1976-11-01), Epstein
patent: 3993868 (1976-11-01), Balcewicz
patent: 4020283 (1977-04-01), Epstein
patent: 4028490 (1977-06-01), Epstein
patent: 4072905 (1978-02-01), Keelty
patent: 4238783 (1980-12-01), Miller
patent: 4324001 (1982-04-01), Rhodes
patent: 4359692 (1982-11-01), Ryan
patent: 4500856 (1985-02-01), Childs

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