| OFDM系统中高功率放大器预失真技术研究 |
| |
| 引用本文： | 赵彬,陆锐敏.OFDM系统中高功率放大器预失真技术研究[J].军事通信技术,2009(1). |
| |
| 作者姓名： | 赵彬 陆锐敏 |
| |
| 作者单位： | 解放军理工大学通信工程学院研究生1队;总参谋部第63研究所; |
| |
| 摘 要： | 针对正交频分复用(OFDM)系统中高功率放大器(HPA)固有的非线性特性导致频谱再生和邻道干扰等问题,介绍了一种高功率放大器的自适应预失真技术,该技术采用查表法对信号进行预失真。本文用M AT-LAB仿真研究分析了基于查表法自适应基带预失真算法的有效性。仿真实验表明:该预失真算法可以有效地降低放大器所带来的OFDM信号频谱再生等非线性失真,提高了系统的性能。
|
| 关 键 词： | 高功率放大器 正交频分复用 非线性失真 查询表 |
Research of Predistortion of HPA in OFDM Systerm |
| |
| ZHAO Bin,LU Rui-min.Research of Predistortion of HPA in OFDM Systerm[J].Journal of Military Communications Technology,2009(1). |
| |
| Authors: | ZHAO Bin LU Rui-min |
| |
| Institution: | 1.Postgraduate Team 1 ICE;PLAUST Nanjing 210007;China;2.The 63rd Research Institute of PLA General Staff Headquarters;Nanjing 210007;China |
| |
| Abstract: | In order to solve the problem that the nonlinearity of high power amplifier(HPA) causes spectral spreading and adjacent channel interference in orthogonal frequency division multiplexing(OFDM) system,an method of predistortion compensation for linearization of HPA was proposed and the signal predistorted by a look-up table.The LUT method of adaptive predistortion was simulated by the MATLAB tool.Experimental simulation results show that the predistortion can effectively reduce the nonlinearity of the spectr... |
| |
| Keywords: | high power amplifier orthogonal frequency division multiplexing nonlinear distortion look-up table |
| 本文献已被 CNKI 等数据库收录！ |
