To provide a baseband processing device having software functions capable of receiving two or more different broadcasting waves and reducing power consumption; and a signal processing method thereof.

A receiver unit 101 is capable of demodulation processing of reception data for two or more different standards or channels. The receiver unit 101 having a software radio function includes: a hardware configured demodulator 11 for performing demodulation processing of first reception data for a reference standard and a reference channel by hardware processing; and a DSP configured demodulator 21 for performing demodulation processing of second reception data for multi-standard or multi-channel by a software function.