降低正交频分复用峰均比的非线性变换方法
eduction of the peak-to-average power ratio of OFDM by exploiting nonlinear transform
正交频分复用(OFDM)由于具有能够抵抗频率选择性衰落，较高的频谱效率及易于实现的优点，正在得到日益广泛的应用；但是，具有较高的峰值与平均功率比是它的一大缺点。在本文中，我们提出了一种简单有效的降低峰均比的方法，通过把OFDM信号看作随机变量，经过适当的变换，把OFDM时域信号幅度的分布改变为近似的均匀分布，从而压缩了信号的动态范围，有效地降低了峰均比，并且在通过加性高斯信道后，获得了较好的误码率性能，通过数据仿真验证了所提出方法的有效性。
In this paper, we present a nonlinear transform to efficiently reduce the high peak-to-average power ratio of OFDM. The nonlinear transform changes time domain signal amplitude‘s statistic distribution from Rayleigh to approximate uniform, therefore not only reduce time domain signal’s dynamic range, but also reduce the high peak to average power ratio to a low level. The proposed scheme performed well when in the circumstances of Rayleigh fading channel on the symbol error rate. The proposed scheme’s performance is confirmed by simulations
殷勤业、孟银阔
通信无线通信
峰均比，统计分布，OFDM
peak-to-average ratio OFDM nonlinear transform
殷勤业,孟银阔.降低正交频分复用峰均比的非线性变换方法[EB/OL].(2005-12-22)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/200512-569.点此复制
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