TRANSMISSION APPARATUS, RECEPTION APPARATUS AND DIGITAL RADIO COMMUNICATION METHOD

摘要

A transmission apparatus includes a frame configuration determiner that determines a modulation system, from among a plurality of modulation systems, based on a communication situation. A first symbol generator modulates a digital transmission signal, according to the modulation system determined by the frame configuration determiner and generates a first symbol, the first symbol comprising a first quadrature baseband signal. A second symbol generator modulates a known digital transmission signal between a transmitting side and a receiving side and generates a second symbol, the second symbol comprising a second quadrature baseband signal.