To realize a software radio processing with a reduced circuit area by hardware and software which can process transmission and reception, or synchronization and demodulation in time division. There are provided a circuit DRC that can dynamically change a configuration with a structure that can change the configuration at a high speed, a general processor, and an interface for connection with an external device such as an AD converter or a DA converter. Software radio is realized by using a software radio chip that conducts plural different processing such as transmission and reception, or synchronization and demodulation in time division. The different processing during the radio signal processing can be conducted in time division. As a result, the software radio can be realized with a circuit of a reduced area in a software radio system that allocates regions of an FPGA to the respective processing.