基于粒子群优化算法的功放预失真处理A power amplifier predistortion processing method based on particle swarm optimization
董元,王勇超
摘要(Abstract)：
根据功率放大器的记忆非线性特性,给出一种基于粒子群优化算法的预失真处理方法。选取记忆非线性多项式作为预失真器模型,用粒子群优化算法对多项式的系数进行最优估计,获得预失真器模型参数。分别对连块Wiener模型和记忆多项式模型这两种经典功率放大器模型进行预失真处理,结果表明,所给方法对记忆非线性功放的线性化效果良好,可正确判别发送信号。
关键词(KeyWords)： 功率放大器;粒子群优化算法;记忆效应;预失真
基金项目(Foundation): 西安邮电大学青年教师科研基金资助项目(ZL2013-23)
作者(Author): 董元,王勇超
DOI: 10.13682/j.issn.2095-6533.2016.02.017
参考文献(References)：
- [1]EUN C,POWERS E J.A New Volterra Predistorter Based on the Indirect Learning Architecture[J].IEEE Transactions on Signal Processing,1997,45(1):223-227.DOI:10.1109/78.552219.
- [2]KIM J,KONSTANTINOU K.Digital Predistortion of Wideband Signals based on Power Amplifier Model with Memory[J].Electronic Letters,2001,37(23):1417-1418.DOI:10.1049/el:20010940.
- [3]HE Z Y,GE J H,GENG S J,et al.An Improved Look-Up Table Predistortion Technique for HPA with Memory Effects in OFDM Systems[J].IEEE Transactions on Broadcasting,2006,52(1):87-91.DOI:10.1109/TBC.2005.861608.
- [4]陈凯亚,王敏锡.Wiener功放的分离预失真方法[J/OL].通信学报,2005,26(9):31-34[2015-05-12].http://www.cnki.com.cn/Article/CJFDTotalTXXB200509004.htm.
- [5]钱业清,姚天任.记忆非线性功放的神经网络预失真[J/OL].计算机工程与应用,2004,40(21):100-103[2015-05-12].http://www.cnki.com.cn/Article/CJFDTotal-JSGG200421031.htm.
- [6]董元,王勇,易克初.粒子群优化算法发展综述[J/OL].商洛学院学报,2006,20(4):28-32[2015-05-12].http://www.cnki.com.cn/Article/CJFDTotalSLSF200604009.htm.
- [7]董元,王勇,易克初.一种记忆功率放大器自适应线性化仿真[J/OL].计算机技术与发展,2010,20(6):217-220[2015-05-12].http://www.cnki.com.cn/Article/CJFDTotal-WJFZ201006056.htm.
- [8]KU H.Behavioral Modeling of Nonlinear RF Power Amplifiers for Digital Wireless Communication Systems with Implications for Predistortion Linearization Systems[D/OL].Georgia:Georgia Institute of Technology,2003:1-138[2015-05-12].http://hdl.handle.net/1853/5327.