MULTI-CARRIER TRANSMISSION APPARATUS AND MULTI-CARRIER TRANSMISSION METHOD

摘要

Transmission digital data is converted to N parallel data sequences by an S/P converting section (103) via an error correction coding section (101) and a digital modulating section (102). A subcarrier selecting section (104) selects M parallel data sequences thereamong. The selected data sequences are converted to an OFDM signal via an IFFT section (105-1) and a P/S converting section (106-1) and a peak is detected by a peak detecting section (107). A signal output to an IFFT section (105-2) is also processed in the similar way to detect a peak. A signal selecting section (108) selects one of OFDM signals based on information reported from the peak detecting section (107) and outputs it. The signal is transmitted via a RF transmitting section (109) and an antenna (110). This enables to control a peak power of a multicarrier signal and suppress deterioration in an error rate at a receiving time and interference with a signal of another system. <IMAGE>