| 摘要 |
PURPOSE: To monitor a booster by adjusting a gain of the booster so as not to greatly affect a base station by a noise of the booster, thereby adjusting a speech amount under the booster. CONSTITUTION: A booster 100 receives a perch signal sent from base stations 180, 182 or the like to measure reception power of the perch signal in the booster 10 receives information of transmission power of the perch signal in the base stations 180, 182 or the like, and the booster 100 measures noise power in an amplified incoming signal in the booster 100. The amplification gain of the incoming signal and the amplification gain of the outgoing signal are controlled on the basis of the transmission power of the perch signal in the base stations 180, 182 or the like, the reception power of the perch signal in the booster 100 and the noise power of the amplified incoming signal in the booster 100. |
