TRANSMISSION DEVICE, RECEPTION DEVICE AND RADIO COMMUNICATION METHOD

摘要

On a transmission side, a spectrum−spread spread modulating signal is multiplexed with a spectrum−not−spread information modulating signal in the same frequency band, and, on a reception side, a spread−spectrum demodulating unit (1803) demodulates the spread modulating signal. Then, a spread−spectrum modulating signal reproducing unit (1805) generates a replica signal of the spread modulating signal and a subtraction unit (1807) removes the replica signal from a multiplexed signal to thereby extract an information signal not spectrum−spread. Accordingly, even when many information signals are transmitted in the same frequency band, they can be satisfactorily separated and demodulated on the reception side.