Patent ID: 7162213

Claim:
A transmission method comprising the steps of: acquiring a carrier of a specified frequency; acquiring first and second transmission data sequences; generating a first baseband waveform of a cycle equivalent to an integral multiple of the carrier and multiplying the generated first baseband waveform by the carrier to generate a first multiplied signal, and then multiplying the first multiplied signal with the first transmission data sequence to acquire a first transmission waveform; generating a second baseband waveform having a specified phase difference from the first baseband waveform at the cycle equivalent to the integral multiple of the carrier and multiplying the generated second baseband waveform by the phase shifted carrier resulting from phase shift of the carrier to generate a second multiplied signal, and then multiplying the second multiplied signal with the second transmission data sequence to acquire a second transmission waveform; and mixing the first transmission waveform with the second transmission waveform to acquire a transmission signal and transmitting the transmission signal.