Supervising system for use in radio transmission

Pulse or digital communications – Spread spectrum – Direct sequence

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Details

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

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