A communication apparatus (1A, 2A, 2B) comprising: a modulation unit configured to produce modulation symbols by taking encoded bits as input, and a radio transmission unit configured to selectively map the modulation symbols to a plurality of first OFDM symbols of a first subframe for a first bandwidth, the first bandwidth being a part of a predetermined bandwidth, or a plurality of second OFDM symbols of a second subframe for a second bandwidth, the second bandwidth being a part of the predetermined bandwidth, and transmit the plurality of first OFDM symbols or the plurality of second OFDM symbols, wherein each of the plurality of first OFDM symbols includes a plurality of first subcarriers, spacing between the plurality of first subcarriers being 15 kHz, each of the plurality of second OFDM symbols includes a plurality of second subcarriers, spacing between the plurality of second subcarriers being 30 kHz, the first subframe includes the plurality of first OFDM symbols and a plurality of first cyclic prefixes, CPs, a quantity of plurality of first OFDM symbols included in the first subframe is 14 and a quantity of plurality of first CPs included in the first subframe is 14, the second subframe includes the plurality of second OFDM symbols and a plurality of second CPs, a quantity of plurality of second OFDM symbols included in the second subframe is 28 and a quantity of plurality of second CPs included in the second subframe is 28, the first two CPs of the plurality of first CPs added to the first two OFDM symbols of the first subframe are different in length, the plurality of second CPs include a CP with a first length and a CP with a second length, and the first length and the second length are different from each other, characterized in that a length of the first CP of the plurality of first CPs for the first bandwidth added to the first OFDM symbol of the first subframe is equal to a combined length of the first two CPs of the plurality of second CPs for the second bandwidth added to the first two OFDM symbols of the second subframe. a modulation unit configured to produce modulation symbols by taking encoded bits as input, and a radio transmission unit configured to selectively map the modulation symbols to a plurality of first OFDM symbols of a first subframe for a first bandwidth, the first bandwidth being a part of a predetermined bandwidth, or a plurality of second OFDM symbols of a second subframe for a second bandwidth, the second bandwidth being a part of the predetermined bandwidth, and transmit the plurality of first OFDM symbols or the plurality of second OFDM symbols, wherein each of the plurality of first OFDM symbols includes a plurality of first subcarriers, spacing between the plurality of first subcarriers being 15 kHz, each of the plurality of second OFDM symbols includes a plurality of second subcarriers, spacing between the plurality of second subcarriers being 30 kHz, the first subframe includes the plurality of first OFDM symbols and a plurality of first cyclic prefixes, CPs, a quantity of plurality of first OFDM symbols included in the first subframe is 14 and a quantity of plurality of first CPs included in the first subframe is 14, the second subframe includes the plurality of second OFDM symbols and a plurality of second CPs, a quantity of plurality of second OFDM symbols included in the second subframe is 28 and a quantity of plurality of second CPs included in the second subframe is 28, the first two CPs of the plurality of first CPs added to the first two OFDM symbols of the first subframe are different in length, the plurality of second CPs include a CP with a first length and a CP with a second length, and the first length and the second length are different from each other, characterized in that a length of the first CP of the plurality of first CPs for the first bandwidth added to the first OFDM symbol of the first subframe is equal to a combined length of the first two CPs of the plurality of second CPs for the second bandwidth added to the first two OFDM symbols of the second subframe.