QPSK modulated quadrature baseband signal generating section 301 generates
a QPSK modulated quadrature baseband signal. 8PSK modulated quadrature baseband
signal generating section 302 generates an 8PSK modulated quadrature baseband
signal. Based on the modulation scheme determined information, in-phase component
switching section 304 and quadrature component switching section 305
switch between the QPSK modulated quadrature baseband signal, 8PSK modulated quadrature
baseband signal and pilot symbol to output to radio section 306. Radio section
306 performs the predetermined radio processing on the baseband signal to
output a transmission signal. The transmission signal is amplified in power amplifier
307, and the amplified transmission signal is transmitted from transmission
antenna 309. It is thereby possible to take into account both the improvement
in the data transmission rate, and the benefit and convenience in terminals.