On the distribution of the peak-to-average power ratio in OFDM signals
On the distribution of the peak-to-average power ratio in OFDM signals
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DOI：
10.1109/26.905885
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发表时间：
2001-02-01
影响因子：
8.3
通讯作者：
Imai, H
中科院分区：
文献类型：
--
作者：
Ochiai, H;Imai, H
研究了严格限带正交频分复用（OFDM）信号峰均功率比（PAPR）的分布。假设基本和OFDM信号的特征在于作为一个带限复高斯过程，我们首先试图推导出的确切分布的峰均比在带限OFDM信号。由于这种分布不能以封闭形式表示，我们进一步开发了一个简单的封闭形式的近似，基于水平交叉率分析。与计算机模拟结果的比较表明，随着子载波数目的增加，所提出的分布具有良好的一致性和收敛性。
The distribution of the peak-to-average power ratio (PAPR) in strictly band limited orthogonal frequency-division multiplexing (OFDM) signals is studied. Assuming that the base- and OFDM signal is characterized as a band-limited complex Gaussian process, we first attempt to derive the exact distribution of the PAPR in the band-limited OFDM signals. Since this distribution cannot be expressed in a closed form, we further develop a simple closed-form approximation, based on the level-crossing rate analysis. Comparisons of the proposed distributions with those obtained by computer simulations show goad agreement and convergence with an increase in the number of subcarriers.