A communication apparatus (10, 10A, 10B) that performs a communication using a communication frame (FR1-FR8, FRN) corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth, the communication apparatus (10, 10A, 10B) comprising: a processor; and a communicating device, wherein the communication frame (FR1-FR8, FRN) includes a first communication channel (CH1-CH10) that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel (CH1-CH10) that corresponds to the second frequency bandwidth and that has a plurality of subcarriers, the processor sets a first phase vector with respect to the first communication channel (CH1-CH10), sets a second phase vector different from the first phase vector with respect to the second communication channel (CH1-CH10), and generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, wherein each element of a phase vector is used in the rotation of the phase of symbol data corresponding to a subcarrier, and the communicating device transmits the communication data using the communication frame (FR1-FR8, FRN), characterized in that a phase vector in which a first Peak to Average Power Ratio (PAPR) relevant to reception in the first communication channel (CH1-CH10) is equal to or less than a predetermined value is set as the first phase vector, a phase vector in which a second PAPR relevant to reception in the second communication channel (CH1-CH10) is equal to or less than a predetermined value is set as the second phase vector, and a phase vector in which a third PAPR relevant to reception in the communication frame (FR1-FR8, FRN) including the first communication channel (CH1-CH10) and the second communication channel (CH1-CH10) is equal to or less than a predetermined value is set as a combination of the first phase vector and the second phase vector and/or characterized in that the processor changes the first phase vector and the second phase vector when the number of preamble data transmitted in the communication frame (FR1-FR8, FRN) changes. a processor; and a communicating device, wherein the communication frame (FR1-FR8, FRN) includes a first communication channel (CH1-CH10) that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel (CH1-CH10) that corresponds to the second frequency bandwidth and that has a plurality of subcarriers, the processor sets a first phase vector with respect to the first communication channel (CH1-CH10), sets a second phase vector different from the first phase vector with respect to the second communication channel (CH1-CH10), and generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, wherein each element of a phase vector is used in the rotation of the phase of symbol data corresponding to a subcarrier, and the communicating device transmits the communication data using the communication frame (FR1-FR8, FRN), characterized in that a phase vector in which a first Peak to Average Power Ratio (PAPR) relevant to reception in the first communication channel (CH1-CH10) is equal to or less than a predetermined value is set as the first phase vector, a phase vector in which a second PAPR relevant to reception in the second communication channel (CH1-CH10) is equal to or less than a predetermined value is set as the second phase vector, and a phase vector in which a third PAPR relevant to reception in the communication frame (FR1-FR8, FRN) including the first communication channel (CH1-CH10) and the second communication channel (CH1-CH10) is equal to or less than a predetermined value is set as a combination of the first phase vector and the second phase vector and/or characterized in that the processor changes the first phase vector and the second phase vector when the number of preamble data transmitted in the communication frame (FR1-FR8, FRN) changes.