| 摘要 |
The present invention is aimed to provide a radio base station that communicates with a plurality of mobile stations by a method, such as the space division multiplex, of simultaneously multiplexing into the same frequency, and exercise a control using an index that is different from the SIR and can be used in a control exercised to properly separate signals sent from mobile stations from the same frequency. The reception response vector predicting unit ( 524 ), provided in the radio base station of the present invention, obtains a reception response vector that indicates a propagation path of a signal from a mobile station to the radio base station, for each of the plurality of mobile stations. The reception DD ratio calculator ( 51 ) obtains two reception response vectors for two mobile stations from the reception response vector predicting unit, calculates a reception DD ratio of (i) a square of a reception response vector of a mobile station to (ii) a square of a reception response vector of the other mobile station, and sends the calculated reception DD ratio to the control unit ( 80 ). The control unit ( 80 ) judges whether to exercise the transmission power control or the like, based on the reception DD ratio. If the reception DD ratio is not belong to a certain value range, the transmission power control or the like is exercised. |
