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

A Modified Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers
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宽带功率放大器的改进的基于规范分段线性函数的行为模型

DOI:
10.1109/lmwc.2016.2524512
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发表时间:
2016-02
影响因子:
3
通讯作者:
Hong Wei
Hong Wei
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhai Jianfeng;Zhang Lei;Yu Zhiqiang;Zhou Jianyi;Hong Wei

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提出了一种改进的基于规范分段线性函数(CPWL)的宽带功率放大器模型。该模型具有类似于分解矢量旋转(DVR)模型的结构,但没有DVR操作,其中一阶基函数可以通过分析用二阶函数代替。该模型比DVR模型具有更低的复杂度,模型参数可以用最小二乘法估计。实验结果表明,当宽带Doherty功率放大器被100 MHz带宽的5载波高级长期演进(LTE-A)信号激励时,该模型与DVR模型具有相同的归一化均方误差性能。
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.
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