METHOD OF REDUCING A PEAK TO AVERAGE POWER RATIO OF A MULTICARRIER SIGNAL

摘要

In order to reduce a peak to average ratio in a wireless transmission, a coding of an input data comprises: - mapping of input data on a basic constellation; - generation (60) of a frequency domain symbol per transmit antenna; - generation (611,61Ntx) of time domain OFDM signals; - clipping (621,620Ntx) of time domain OFDM signals to get modified time domain symbols; - generation (631,63Ntx) of frequency domain modified signal; - de-mapping (64) of frequency domain modified signal to generate modified constellations; - amplification (65,66,67) of the difference (65) between the modified constellation signals and the basic constellation signals with a fixed value for each carrier independent of input data to get a resulting frequency domain signal; - projection (68) of the resulting frequency domain signal on extended region; - generation of the resulting time domain signal.