Transmitter

Patent Pending A transmitter in a wireless communication system is provided with: a plurality of quadrature modulation mixers, which modulate respective analogue signals, obtained by carrying out serial-parallel conversion on input digital signal sequences and inputting the signals into a plurality of DA converters, into quadrature modulated RF signals; and a plurality of RF amplifiers, which amplify the plurality of quadrature modulated RF signals from the quadrature modulation mixers to correspond to individual subcarrier frequencies.