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首页> 外文期刊>Microwave and Wireless Components Letters, IEEE >A Band-Limited Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers
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A Band-Limited Canonical Piecewise-Linear Function-Based Behavioral Model for Wideband Power Amplifiers

机译：基于带限制正则分段线性函数的宽带功率放大器行为模型

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摘要

A band-limited canonical piecewise-linear function (CPWL)-based model is proposed for wideband power amplifiers (PAs). The model has a similar structure of the band-limited dynamic deviation reduction (DDR) Volterra series model but without high-order terms and long finite impulse response filters, which are replaced by CPWL. The model has lower complexity and more flexibility than the band-limited DDR Volterra series model and the model parameters can be estimated by the least-square method. Experimental results show that the proposed model nearly gives the same normalized mean square error and digital predistortion performance as the band-limited Volterra series when a wideband PA is excited by a 5-carrier long-term evolution advanced signal of 100-MHz bandwidth.
机译：针对宽带功率放大器（PA），提出了一种基于带限正则分段线性函数（CPWL）的模型。该模型具有与带限动态偏差减少（DDR）Volterra级数模型类似的结构，但没有高阶项和长有限脉冲响应滤波器，已被CPWL取代。与带限DDR Volterra系列模型相比，该模型具有更低的复杂度和更大的灵活性，并且可以通过最小二乘法估算模型参数。实验结果表明，当宽带PA由100 MHz带宽的5载波长期演进高级信号激励时，所提出的模型几乎具有与带限Volterra级数相同的归一化均方误差和数字预失真性能。

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