Two pilot frequency control for communication systems

Details Two pilot frequency control for communication systems Two pilot frequency control for communication systems

1982-10-04

1984-08-14

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455 12, 455 71, 455265, H04B 116

Patent

active

044661304

ABSTRACT:
Two pilot signals, derived so that there is a predetermined ratio between the frequency difference of the tones and the absolute frequency of either of the pilot signals, are transmitted from a reference station to each of a number of remote stations. At each receiving station, the frequency error is derived from the frequency difference of the two pilot signals, and this frequency error is used to adjust the frequency of the local oscillator.

REFERENCES:
patent: 3370235 (1968-02-01), Miyagi
patent: 3450842 (1969-06-01), Lipke
patent: 3626426 (1971-12-01), Steinberg
patent: 4188579 (1980-02-01), Yoshisato
patent: 4191923 (1980-03-01), Schelisch

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