Patent ID: 9590834
Date: 2017-03-07
CPC Classifications: H03F,H04B,H04L

Claim:
1. A transmitting apparatus, comprising: a modulation signal generator that generates a modulation signal by modulating transmission data selecting one of a plurality of modulation schemes according to a frame timing signal, a first modulation scheme of the plurality of modulation schemes having a higher m-ary modulation value than other modulation schemes of the plurality of modulation schemes; a pilot signal generator that generates a pilot signal by selecting one of a plurality of amplitudes according to the frame timing signal; an orthogonal frequency division multiplexing (OFDM) signal generator that generates an OFDM signal by selecting the modulation signal and the pilot signal according to the frame timing signal; a radio converter that converts the OFDM signal to a radio signal; an amplifier that amplifies the radio signal; and an antenna that transmits the amplified radio signal, wherein the pilot signal is inserted in the OFDM signal per a predetermined OFDM symbol and per a predetermined subcarrier and has a lower amplitude than a maximum amplitude of the first modulation scheme in an in-phase-quadrature (IQ) plane.