RADIO TRANSMISSION DEVICE, RADIO RECEPTION DEVICE, RADIO TRANSMISSION METHOD, AND RADIO RECEPTION METHOD

摘要

A radio transmission device capable of improving the reception error rate characteristics of a receiver. In this device, an FFT (Fast Fourier Transform) unit (102) subjects a transmission signal to an FFT operation, in which a signal on a time axis is converted into a signal on a frequency axis. A control unit (103) controls the transmission power of the FFT-operated transmission signal on the frequency axis. An IFFT (Inverse Fast Fourier Transform) unit (104) subjects the transmission signal having its transmission power controlled, to an IFFT operation, in which an inverse conversion is made into a signal on the time axis. A transmission RF unit (106) transmits the IFFT-operated transmission signal on a single carrier.