To provide a CDMA mobile wireless system.

In a CDMA mobile wireless system having a macro cell C1 and a micro cell C2, a base station of the macro cell C1 is designed so as to shape respective coverage areas in a way that a signal from an optional direction is received while being attenuated. Thus, an interference signal, especially a signal from a mobile station MS at the outside of the micro cell C2 is cancelled. A null point is produced in the micro cell coverage area by using a 'null steering'.