The channels of A-EUTRA component carriers on which the mobile station devices of EUTRA do not stand by are configured without almost changing the conventional EUTRA channel configurations. A wireless transmitting apparatus, which performs radio transmission to a plurality of wireless receiving apparatuses by assigning one or more component carriers to a downlink, includes a control channel element processing section 17 for performing, for each component carrier, processing of changing a structure of downlink control channel used to transmit control data for each wireless receiving apparatus. The control channel element processing section 17 associates the modulated symbols output from a downlink control channel processing section 16, with control channel element indexes, rearranges resource element groups constituting control channel elements, and outputs them to a multiplexing section 19.