| 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.
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