| 摘要 |
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 information-data signal. A mobile station has an acquisition circuit (101, 102, 103) for acquiring and decoding the generic spread-spectrum signal, a detector (104) for detecting a received power level of the generic spread-spectrum signal, a decoder (105) decoding the APC-data signal as a threshold, a differential amplifier (106) for generating a comparison signal by comparing the received power level to the threshold, a transmitter (112) for transmitting a transmitter spread-spectrum signal, an antenna, and a variable-gain device (111) responsive to the comparison signal indicating an increase or decrease for adjusting a transmitter-power level of the transmitter spread-spectrum signal.
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