Adaptive power control for a spread spectrum transmitter

Details Adaptive power control for a spread spectrum transmitter Adaptive power control for a spread spectrum transmitter

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

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