A wireless communication system comprising a transmitting station and a receiving station, and a control method therefore. A mobile station (101) as the transmitting station has a facility for transmitting a preamble signal to a base station (102) as the receiving station before transmission of information data from the mobile station (101) to the base station (102). On the other hand, the base station (102) has a facility for performing path detection by using a signal threshold for the preamble signal received from the mobile station (101), a facility for performing further path detection by using another threshold for the received preamble signal if paths are detected in the path detection, and a facility for setting path information of the paths detected by using the plurality of thresholds for a receiver (206) installed in the base station (102) so as to perform a path diversity reception. In the wireless communication system and the control method therefore, the receiver (206) of the base station (102) receives information data transmitted from the mobile station (101).