Radio base station and program for radio base station

The diaphragm radio base station, wherein response vector computing unit (561), and LOCATING unit (562), MSE computing unit (563) and a FD computing unit (564) equal obtained 2 mobiles to a communication unit of preset at least 1 mobile station, control unit (80) based on target for determining whether suitable for spatial division multiple access, which determines suitable for the spatial division multiple access communication. By the end of a radio base station, and wireless base station and mobile base maintaining stability of communication and a on the spatial division multiple access of the effect.