This technology provides a way to appropriately apply Dual Carrier Modulation (DCM) to a Distributed Tone Resource Unit (DRU). [Solution] A communication device compliant with the IEEE 802.11 standard series, comprising a transmission means that modulates and transmits the same data using one first data subcarrier and one second data subcarrier belonging to each of the first and second groups, obtained by dividing the data subcarriers contained in one resource unit in which subcarriers are distributed across a distributed bandwidth into two groups, and then dividing them into two groups.