RADIO COMMUNICATION APPARATUS AND PEAK SUPPRESSING METHOD

摘要

A radio communication apparatus capable of reducing a ratio of transmission peak electric power to average electric power without degrading the transmission efficiency. In the apparatus, a buffer part (103) temporarily stores input data before peak suppression. A peak detecting part (106) detects a peak having an amplitude level that is higher than a threshold level. A peak cutting part (107) suppresses the detected peak to the threshold level. A switching part (109) applies the peak-suppressed signal to an FFT part (114) when the peak is detected. The switching part (109) causes the peak-suppressed signal to be processed for transmission when no peak is detected. A signal recovering part (115) removes, based on MCS information, a signal assigned to a subcarrier in which a high level of MCS has been set, and assigns, instead of the removed signal, a signal stored in the buffer part (103) before the peak suppression. An MCS setting part (116) selects an MCS based on the reception quality information of the other end of communication.