针对于此，本文主要研究降低峰值平均功率比算法。
So this thesis studies the algorithms which reduce the PAPR.
它的主要缺点是对频率同步比较敏感，并且峰值平均功率比（PAPR）过高。
Its main disadvantages are sensitivity to synchronization errors and high peak-to-average power ratio (PAPR).
降低OFDM - CPM系统中的峰值平均功率比(PAPR)是关键技术之一。
One of the key techniques is to reduce the peak-to-average power ratio (PAPR) of the OFDM-CPM system.
多载波信号的峰值平均功率比远远大于单载波系统，而且峰平比随着子载波个数无限增长。
The ratio of peak and average power in multi carrier system is much larger than that in single carrier system, and may grow unboundedly as the number of subcarriers grows to infinity.
提出了一种基于分割传输序列(PTS)改善正交频分复用信号峰值平均功率比(PAPR)的优化算法。
An optimal algorithm based on partial transmit sequences (PTS) for reducing the peak to average power ratio (PAPR) of orthogonal frequency division multiplexing signal is presented.
但是OFDM信号有高的峰值平均功率比，当它通过高功率放大器时会导致非线性失真，从而使得系统的性能下降。
But the OFDM signal has a large PAPR, which results in the significant nonlinear distortion when it passes through a HPA (high power amplifier), thereby the performances of the system descend.
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.
理论分析发现，随着过采样率的增加，采样点之间相关性上升，新增加采样点对信号峰值平均功率比的影响下降，系统峰值平均功率比的变化缓慢并趋于稳定。
We can find that correlation value between sampled points ascends and the influence that the new sampled point acts on PAPR decreases with the increase of the oversampling rate.
功率计经常用于手机生产测试，因为它能快速的测量峰值功率，平均功率，峰均比。
Power meters are often considered for mobile-telephone production testing, because they can quickly measure peak power, average power, and peak-to-average ratio.
功率计经常用于手机生产测试，因为它能快速的测量峰值功率，平均功率，峰均比。
Power meters are often considered for mobile-telephone production testing, because they can quickly measure peak power, average power, and peak-to-average ratio.
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