A signal generating apparatus, which is adapted for outputting a multicarrier signal where data are multiplexed with respect to a plurality of subcarriers, includes: a rotation sequence selection signal generator for generating a plurality of rotation sequence selection signal sequences which vary the phase relationship between subcarriers on the basis of a plurality of phase rotation sequences and include the number of samples, which are smaller than that of actual transmission signals; and a minimum peak power signal generator for selecting a signal of which peak power becomes minimum from the plurality of rotation sequence selection signals to generate an actual transmission signal by using a phase rotation sequence multiplied with respect to the selected signal.