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    • 4. 发明申请
    • METHOD OF REDUCING A PEAK TO AVERAGE POWER RATIO OF A MULTICARRIER SIGNAL
    • 降低平均功率比的信号的方法
    • WO2008138796A1
    • 2008-11-20
    • PCT/EP2008/055485
    • 2008-05-05
    • THOMSON LICENSINGMOCQUARD, OlivierGUEGUEN, ArnaudDAVID, Jérôme
    • MOCQUARD, OlivierGUEGUEN, ArnaudDAVID, Jérôme
    • H04L27/26H04L27/34
    • H04L27/2624H04L27/3411
    • 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, 61 Ntx) 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.
    • 为了降低无线传输中的峰均比,输入数据的编码包括: - 基本星座上的输入数据的映射; - 每个发射天线的频域符号的产生(60); - 一代(611,61 Ntx)时域OFDM信号; - 剪辑(621,620Ntx)的时域OFDM信号,以获得修改的时域符号; - 频域修正信号的一代(631,63Ntx); - 解映射(64)频域修改信号以产生修改的星座; - 修改的星座信号和基本星座信号之间的差异(65)的放大(65,66,67),其具有与输入数据无关的每个载波的固定值,以获得所得到的频域信号; - 在扩展区域上产生的频域信号的投影(68); - 产生所产生的时域信号。