Spread spectrum adaptive power control communications system and

Details Spread spectrum adaptive power control communications system and Spread spectrum adaptive power control communications system and

1994-03-28

1996-07-09

Cain, David C.

Pulse or digital communications

Repeaters

Testing

375349, 455 331, 455 61, 455213, H04Q 700

Patent

active

055352383

ABSTRACT:
A system and method for adaptive-power control of a spread-spectrum transmitter of a mobile station operating in a cellular-communications network using spread-spectrum modulation. A mobile station transmits a first spread-spectrum signal. A base station has an automatic-gain-control circuit for generating an AGC-output signal, from a received signal. The received signal includes the first spread-spectrum signal and an interfering signal. The base station also has a correlator for despreading the AGC-output signal, a power-measurement circuit responsive to processing the received signal with the despread AGC-output signal for generating a received-power level, a comparator coupled to the power-measurement circuit for generating a comparison signal by comparing the received-power level to a threshold level, a transmitter for transmitting a second spread-spectrum signal, and an antenna. The mobile station has a variable-gain device responsive to the comparison signal for adjusting a transmitter-power level of the first spread-spectrum signal.

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