Patent ID: 7953177

Claim:
A radio communication apparatus for switching modulation schemes, comprising: a QPSK modulation signal generating section that modulates transmission data by a QPSK modulation scheme and outputs a QPSK modulation signal; a 64QAM modulation signal generating section that modulates transmission data by a 64QAM scheme and outputs a 64QAM modulation signal; a transmission radio section that has the QPSK modulation signal or the 64QAM modulation signal as input and outputs a transmission signal; and a common transmission power amplifying section that amplifies both power of the transmission signal of the QPSK modulation signal and power of the transmission signal of the 64QAM modulation signal, wherein the QPSK modulation signal generating section and the 64QAM modulation signal generating section each output signal component that make average transmission power of the 64QAM modulation signal in the common transmission power amplifying section smaller than average transmission power of the QPSK modulation signal in the common transmission power amplifying section.