A Modified Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers

被引:29
|
作者
Zhai, Jianfeng [1 ]
Zhang, Lei [1 ]
Yu, Zhiqiang [1 ]
Zhou, Jianyi [1 ]
Hong, Wei [1 ]
机构
[1] Southeast Univ, State Key Lab Millimeter Waves, Sch Informat Sci & Engn, Nanjing 210096, Jiangsu, Peoples R China
关键词
Behavioral modeling; canonical piecewise-linear function (CPWL); decomposed vector rotation (DVR); power amplifier (PA); volterra series; DIGITAL PREDISTORTION; VOLTERRA;
D O I
10.1109/LMWC.2016.2524512
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A modified canonical piecewise-linear function (CPWL)-based model is proposed for characterizing wideband power amplifiers. The model has a similar structure of the decomposed vector rotation (DVR) model but without DVR operations, in which the first-order basis function can be replaced by a second-order function by analysis. The model has lower complexity than the DVR model and the model parameter scan be estimated by least-square method. Experimental results show that the proposed model nearly gives the same normalized mean square error performance as the DVR model when a wideband Doherty power amplifier is excited by a 5-carrier long-term evolution advanced (LTE-A) signal of 100 MHz bandwidth.
引用
收藏
页码:195 / 197
页数:3
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