A method for generating a transmission signal to transmit a modulated signal generated using orthogonal frequency division multiplexing, from a transmitting apparatus with a plurality of antennas, toward a plurality of terminals. The method includes assigning transmission data for the plurality of terminals to a plurality of carrier groups, each carrier group including a plurality of carriers and selecting, from the plurality of antennas, an antenna to be used for transmission toward each of the plurality of terminals. As a transmission mode for each of the plurality of carrier groups, a selection is made of one of a first transmission mode, in which one modulated signal is transmitted, and a second transmission mode in which a plurality of modulated signals are transmitted by using the selected antennas. A transmission signal is generated for transmitting the transmission data assigned to the plurality of carrier groups during an identical time period, using the selected transmission mode.