An overview of peak-to-average power ratio reduction schemes for OFDM signals
An overview of peak-to-average power ratio reduction schemes for OFDM signals
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DOI：
10.1109/jcn.2009.6391327
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发表时间：
2009-06
影响因子：
3.6
通讯作者：
D. Lim;S. Heo;Jong-Seon No
中科院分区：
文献类型：
--
作者：
D. Lim;S. Heo;Jong-Seon No
正交频分复用（OFDM）由于频谱带宽效率、对频率选择性衰落信道的鲁棒性等而被采用作为各种高数据速率无线通信系统的标准。然而，OFDM系统的实现带来了若干困难。其中一个主要缺点是高峰值平均功率比（PAPR），其导致载波间干扰、高带外辐射和误比特率性能下降，这主要是由于高功率放大器的非线性。本文回顾了传统的峰均比降低方案及其修改，以实现在无线通信系统中的实际实现所需的低计算复杂度。
Orthogonal frequency division multiplexing (OFDM) has been adopted as a standard for various high data rate wireless communication systems due to the spectral bandwidth efficiency, robustness to frequency selective fading channels, etc. However, implementation of the OFDM system entails several difficulties. One of the major drawbacks is the high peak-to-average power ratio (PAPR), which results in intercarrier interference, high out-of-band radiation, and bit error rate performance degradation, mainly due to the nonlinearity of the high power amplifier. This paper reviews the conventional PAPR reduction schemes and their modifications for achieving the low computational complexity required for practical implementation in wireless communication systems.