Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1980-03-10
1981-11-17
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
375 76, 375102, 455 89, H04Q 700, H04B 726
Patent
active
043015395
ABSTRACT:
A phase shift monitoring system is provided for a mobile communication system which includes a central, or base station, one or more sub-base stations, and a plurality of mobile units. Each sub-base station is provided with a detection means which is operable to transmit an alarm signal to the base station when a predetermined tolerable phase shift is exceeded. The base station includes means for readjusting the transmission timing in order to compensate for the detected phase shift, either automatically or by manual control.
REFERENCES:
patent: 2575782 (1951-11-01), Bartelink
patent: 3571519 (1971-03-01), Tsimbidis
patent: 3906166 (1975-09-01), Cooper
patent: 4101835 (1978-07-01), Taylor
patent: 4163121 (1979-07-01), Yoshikawa
Chin Stephen
Nippon Electric Co. Ltd.
Safourek Benedict V.
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