Patent ID: 8744503

Claim:
A wireless communication device that uses an adaptive modulation method that switches the modulation method of a data signal according to the state of a transmission line to carry out wireless communication, comprising: a determination unit that, according to the state of the transmission line, determines the reception modulation method that is the modulation method of modulating a received data signal that is received from another wireless communication device; a transmission unit that generates a first pilot signal that indicates the reception modulation method that was determined in said determination unit, and that, after adding an error correction code, modulates and then transmits the first pilot signal; a reception unit that receives a second pilot signal that indicates the transmission modulation method that is the modulation method of modulating the transmitted data signal that is transmitted to another wireless communication device; and a switching unit that, according to the transmission modulation method indicated by the second pilot signal that was received by the reception unit, switches at least one of the modulation method of the first pilot signal that was transmitted by said transmission unit and redundancy of the error correction code of the first pilot signal.