Telecommunications – Transmitter and receiver at separate stations – With control signal
Patent
1982-09-21
1990-03-27
Blum, Theodore M.
Telecommunications
Transmitter and receiver at separate stations
With control signal
455 74, 455103, H04B 100, H04B 700
Patent
active
049127730
ABSTRACT:
A transmitted signal includes a pilot signal, a plurality of information signals and a carrier signal modulated by a modulating signal related in frequency to the pilot signal frequency. At a receiving station, the carrier signal is demodulated and the demodulated signal is used to generate a reference signal to translate the frequencies of the recovered pilot signal and the plurality of information signals by an amount sufficient to correct for undesirable frequency shifts which have occurred in the transmitted signal.
REFERENCES:
patent: Re31295 (1983-06-01), Haley et al.
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patent: 3683279 (1972-08-01), Weinberg et al.
patent: 3701852 (1972-10-01), Sluijter et al.
patent: 3872381 (1975-03-01), Yamamoto et al.
patent: 4107624 (1978-08-01), Turner
patent: 4191923 (1980-03-01), Schelisch
patent: 4197496 (1980-04-01), Hiyama
patent: 4209748 (1980-06-01), Weber
patent: 4259744 (1981-03-01), Junod et al.
patent: 4354277 (1982-10-01), Crackel et al.
R. Bates et al., "L5 System: Signal Administration and Interconnection", Bell Sys. Tech. Jrnl., vol. 53, No. 10, Dec. 1974, pp. 2129-2145.
Blum Theodore M.
Davis Jr. James C.
General Electric Company
Snyder Marvin
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