Automatic frequency control of satellite transmitted spread spec

Details Automatic frequency control of satellite transmitted spread spec Automatic frequency control of satellite transmitted spread spec

1989-10-03

1991-07-30

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

H04K 100

Patent

active

050365231

ABSTRACT:
Automatic frequency control is provided in a satellite-based spread spectrum radio communication system by employing a pilot signal as a frequency reference. A transmitter inserts the pilot signal at a null point in the power versus frequency spectrum of the transmitted spread spectrum signal in order to minimize bandwidth requirements and to avoid interference between the pilot signal and the transmitted data.

REFERENCES:
patent: 3428898 (1969-02-01), Jacobsen et al.
patent: 4435822 (1984-03-01), Spencer et al.
patent: 4567464 (1986-01-01), Siegel et al.
patent: 4630283 (1986-12-01), Schiff

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