Patent ID: 8218680

Claim:
A transmitting apparatus, comprising: a modulation signal generating section that generates a modulation signal by modulating transmission data using one of a plurality of modulation schemes, the plurality of modulation schemes including a first modulation scheme, a second modulation scheme, and a third modulation scheme, the first modulation scheme having a higher m-ary modulation value than the second modulation scheme and the third modulation scheme, the second modulation scheme having a lower m-ary modulation value than the first modulation scheme, and the third modulation scheme having a lower m-ary modulation value than the second modulation scheme; a pilot signal generating section that generates a pilot signal having one of a plurality of amplitudes, the pilot signal having a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature plane; a selection section that selects the modulation signal or the pilot signal according to a frame timing signal and generates a transmission quadrature baseband signal; a radio section that converts the transmission quadrature baseband signal to a radio signal; an amplifying section that amplifies the radio signal; and an antenna section that transmits the amplified radio signal.