| 一种降低OFDM系统非线性失真的方案 |
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| 引用本文： | 杨静,穆晓敏,杨守义,齐林.一种降低OFDM系统非线性失真的方案[J].微计算机信息,2007,23(27):143-144,213. |
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| 作者姓名： | 杨静 穆晓敏 杨守义 齐林 |
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| 作者单位： | 郑州大学,郑州,450052 |
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| 摘 要： | 近年来,正交频分复用技术以良好的抗多径衰落能力和极高的频谱利用率,成为大家研究的热点.但高峰均功率比（PA-PR）的存在,对高功率放大器的线性度提出很高的要求.若高功率放大器的动态范围不能满足信号的变化,将会使系统性能下降.本文提出一种降低非线性失真的方案,并验证该方案的有效性.
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| 关 键 词： | 正交频分复用 高功率放大器 非线性失真 非线性补偿 |
| 文章编号： | 1008-0570（2007）09-3-0143-02 |
| 修稿时间： | 2007-07-032007-08-05 |
The Research on nonlinear distortion in OFDM system |
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| YANG JING,MU XIAOMIN,YANG SHOUYI,QI LIN.The Research on nonlinear distortion in OFDM system[J].Control & Automation,2007,23(27):143-144,213. |
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| Authors: | YANG JING MU XIAOMIN YANG SHOUYI QI LIN |
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| Affiliation: | YANG JING MU XIAOMIN YANG SHOUYI QI LIN |
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| Abstract: | In recent years, there has been increasing interest in OFDM (orthogonal frequency division multiplexing) in terms of considering its various advantages in combating the severe effects of the frequency selective fading and having very high frequency efficiency. However, the OFDM suffers from the strong sensitivity to the nonlinear distortion, introduced by the transmitting high power amplifier (HPA), since the OFDM has the high peak-to-average power ratio (PAPR). The performance of the system will be decreased, ifthe linear scope of the HPA is not large enough. We propose a new approach to compensate the nonlinearity, which has been verified by computer simulations. |
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| Keywords: | OFDM HPA nonlinear distortion nonlinear compensation |
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