Wireless communication device for use in a wireless communication system having a plurality of base stations (BTS1, BTS2, BTS3) for transmitting downlink signals using different subcarriers, the downlink signal of each base station including a known signal, one of said plurality of base stations being presently in communication with the device, and the device comprising: a Fourier transform processing unit performing Fourier transform processing respectively on a plurality of received signal portions of the downlink signals from one or more of said base stations, respective reception periods of said downlink signals having a predetermined time difference; said wireless communication device being characterised by: a selector selecting one or more signals each corresponding to a subcarrier including the known signal of said one of said plurality of base stations different from the base station presently in communication with the device, from among the signals corresponding to the plurality of subcarriers obtained by the Fourier transform processing unit; and a correlation detector performing correlation calculation to obtain correlation values of the one or more signals selected by the selector with the known signal, and selecting the synchronous timing of said one of said plurality of base stations different from the base station presently in communication, from among start timing sets of the plurality of received signal portions based on said correlation values obtained by the correlation calculation. a Fourier transform processing unit performing Fourier transform processing respectively on a plurality of received signal portions of the downlink signals from one or more of said base stations, respective reception periods of said downlink signals having a predetermined time difference; said wireless communication device being characterised by: a selector selecting one or more signals each corresponding to a subcarrier including the known signal of said one of said plurality of base stations different from the base station presently in communication with the device, from among the signals corresponding to the plurality of subcarriers obtained by the Fourier transform processing unit; and a correlation detector performing correlation calculation to obtain correlation values of the one or more signals selected by the selector with the known signal, and selecting the synchronous timing of said one of said plurality of base stations different from the base station presently in communication, from among start timing sets of the plurality of received signal portions based on said correlation values obtained by the correlation calculation. a selector selecting one or more signals each corresponding to a subcarrier including the known signal of said one of said plurality of base stations different from the base station presently in communication with the device, from among the signals corresponding to the plurality of subcarriers obtained by the Fourier transform processing unit; and a correlation detector performing correlation calculation to obtain correlation values of the one or more signals selected by the selector with the known signal, and selecting the synchronous timing of said one of said plurality of base stations different from the base station presently in communication, from among start timing sets of the plurality of received signal portions based on said correlation values obtained by the correlation calculation.