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Reduction of the crest factor in OFDM signal

机译:降低OFDM信号中的波峰因数

摘要

(57) Abstract The manner which operates the radio communication system uses the orthogonal signal for transmitting the packet of the data between the stations of two or more. Regarding the transmitter the data it is encoded on the multiple orthogonal carriers differential phase modulation technology, for example by DQPSK. The said carrier is combined by the single signal by discrete Fourier adverse change exchanging, before being transmitted in order to decrease the crest factor of the signal which is transmitted the clip is done in specified amplitude. Phase of the aforementioned carrier of one or more before each data packet to make random, therefore, another crest factor probably will be brought for resending the identical packet. This originates in the clipping makes that it resends to the case where it is difficult to transmit the packet because of the signal-noise ratio which is decreased normally secure.
机译:(57)<摘要>操作无线电通信系统的方式使用正交信号在两个或多个站之间发送数据分组。关于发送器,数据例如通过DQPSK在多个正交载波差分相位调制技术上被编码。所述载波通过离散傅立叶逆变化交换由单个信号组合,然后被发送以减小被发送的信号的波峰因数,在指定幅度内完成剪辑。每个数据包之前的一个或多个上述载波的相位要随机化,因此,可能会带来另一个波峰因数,以重新发送同一数据包。这源于削波,使得削波重发到由于信噪比而通常难以确保地降低而难以发送分组的情况。

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