| 摘要 |
A member communication system which includes a radio base station connected to an exchange for establishing a communication interface with a mobile terminal such as a car telephone set where the number of output carriers of a modulation apparatus to be inputted to an amplification apparatus is controlled so as to be decreased in response to failure of an amplification circuit or circuits so that an increase in intermodulation distortion is eliminated and the necessity for each amplification circuit to have a superfluous saturation output is eliminated, thereby reducing power consumption. In the mobile communication system, the radio base station includes a modulation apparatus including a plurality of modulation circuits for outputting carriers different from each other, an amplification apparatus including a plurality of amplification circuits connected in parallel to each other, failure supervision apparatus for supervising a failed condition of the amplification circuits of the amplification apparatus, and an output carrier number control apparatus, for controlling the number of output carriers of the modulation apparatus in response to amplification circuit failure information detected by the failure supervision apparatus. |
