| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-carrier transmission/reception method and a transmitter and a receiver used for it, capable of using plural carrier frequencies and transmitting and receiving digital signals in a relatively high transmission rate under an environment, where a frequency band and transmission power are limited. SOLUTION: This multi-carrier transmitter 10 transmits QAM(quadrature amplitude) modulated information signals as multi-carrier signals which consist of plural carriers. The transmission multi-carrier signals are provided with a common symbol period, after being converted into one frequency interleaved multiplex signal by a frequency conversion part 22 inside this multi-carrier receiver 20 for performing a decoding operation as orthogonal frequency division multiplex(OFDM) signals, then in decoded in an FFT arithmetic circuit 25 and a decoder 26. Thus, the energy concentration of transmission radio waves is eliminated, and power energy inside a prescribed transmission band can be set small. |
