Patent ID: 8170130

Claim:
A transmission method of transmitting modulated signals modulated based on same transmission data from a transmission side to a reception side by using a plurality of transmission antennas, the transmission method comprising the steps of: at the transmission side, generating, based on the transmission data, a plurality of modulated signals, in which symbol waveforms include at least two symbol waveforms having different phase transitions from each other, each of the at least two symbol waveforms having a second-order differential coefficient representing a chronological change of phase that is not always zero during one symbol period, and transmitting the plurality of generated modulated signals from the plurality of the transmission antennas, respectively; and at the reception side, receiving the plurality of modulated signals transmitted from the plurality of the transmission antennas by a reception antenna, detecting the received modulated signals, and decoding detection signals obtained by the detection so as to obtain received data.