Provided is a base station capable of searching cells of different frequencies without losing a opportunity of data communication by effectively performing SCH data transmission. The base station (100) includes: an encoding unit (101) for encoding SCH data; a modulation unit (102) for modulating the encoded SCH data; a transmission timing setting unit (103) for setting the transmission timing of the SCH data; encoding units (104-1 to 104-N) for encoding user data (#1 to #N), modulation units (105-1 to 105-N) for modulating the encoded user data (#1 to #N); and an IFFT unit (106) for mapping the SCH data and the user data (#1 to #N) to sub carriers (#1 to #K) and performing IFFT to generate an OFDM symbol. The transmission timing setting unit (103) sets the transmission timing of the SCH data so that, for example, the SCH data transmission cycle and the frame cycle are relatively prime, i.e., the maximum common multiple of them is 1.