A reception section receives a signal on which signals of channels are multiplexed in a same frequency band through an antenna. A separation section separates a part used for correlation value calculation in the reception signal. Correlation sections create delay profiles by calculating a correlation value using a first basic code and a second basic code for the signals after the separation, respectively. A comparison/channel estimation section cycles each delay profile so that the delay profiles match in a section in which the path of the channel to be detected appears when there is no propagation delay and detects a quasi-matching path in each delay profile after the cycling.