The radio which has peak electricity and the modulation whose bandwidth efficiency is good

摘要

(57) Abstract The communication device (300) the digital modulator (301), the digital signal processor (306), and the amplifier (312) it includes. The aforementioned digital modulator (301) the information generator (304) and the peak oppression device (402) it includes. The peak oppression device (402) the symbol mapper (404) and the symbol scaler (406) it includes. The information which is generated the aforementioned generator (401) by the symbol mapper (404) through, mapping is done to the signal constellation diagram. The information which mapping is done scaling it is done the scaler (406) in next and the aforementioned amplifier (312) to it decreases the peak - mean power ratio of the signal in inputting.