Pulse or digital communications – Repeaters – Testing
Patent
1990-11-16
1992-03-03
Tarcza, Thomas H.
Pulse or digital communications
Repeaters
Testing
455 33, 379 59, 380 34, H04K 100
Patent
active
050938401
ABSTRACT:
An apparatus for adaptive-power control of a spread-spectrum transmitter of a mobile station operating in a cellular-communications network using spread-spectrum modulation. A base station transmits a generic spread-spectrum signal and an APC-data signal. A mobile station has an acquisition circuit for acquiring and decoding the generic spread-spectrum signal, a detector for detecting a received power level of the generic spread-spectrum signal, a decoder for decoding the APC-data signal as a threshold, a differential amplifier for generating a comparison signal by comparing the received power level to the threshold, a transmitter for transmitting a transmitter spread-spectrum signal, an antenna, and a variable-gain device responsive to the comparison signal indicating an increase or decrease for adjusting a transmitter-power level of the transmitter spread-spectrum signal.
REFERENCES:
patent: 3838342 (1974-09-01), Bjorkman
patent: 4189677 (1980-02-01), Cooper
patent: 4285060 (1981-08-01), Cobb et al.
patent: 4538280 (1985-08-01), Mosler, Jr. et al.
patent: 4958359 (1990-09-01), Kato
SCS Mobilecom, Inc.
Swann Tod
Tarcza Thomas H.
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