但是OFDM系统的一个主要缺点就是发送端的传输信号具有较大的峰值平均功率比(PAPR)，这限制了OFDM技术的广泛应用。
One of the major drawbacks of OFDM system is that the OFDM signal of the transmitter can have high peak-to-average power ratio (PAPR), which limits OFDM's wide applications.
考虑实际系统中信号传输通道的数量限制，本文中确定了以下步骤进行被测线路和被控发电机的选择。
Considering the number limit of signal transmit channels, the selection of line which is measured and generator which is controlled goes along following these steps in this paper.
由于受传输带宽的限制，要求信号以较低的速率传输。
Because of the limitation of bandwidth, signal must be transmitted in low speed.
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