A 2-D-Canonical Piecewise Linear Function-Based Behavioral Model for Concurrent Dual-Band Power Amplifiers

A 2-D-Canonical Piecewise Linear Function-Based Behavioral Model for Concurrent Dual-Band Power Amplifiers
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并行双频带功率放大器的基于二维规范分段线性函数的行为模型

DOI:
10.1109/lmwc.2018.2873191
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发表时间:
2018-10
影响因子:
3
通讯作者:
Yu Chao
Yu Chao
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhai Jianfeng;Wu Shuo;Zhang Lei;Chen Zhe;Zhou Jianyi;Yu Chao

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本文提出了一种基于2-D-CPWL函数的并行双频功率放大器行为模型。该模型是从基于Volterra的二维修正记忆多项式(2-D-MMP)模型通过用CPWL代替高阶项而得到的,它可以提供比2-D-MMP模型和一些现有的基于CPWL的双频带模型更低的复杂度。最小二乘算法可用于提取模型系数。实验结果表明,当双频段PA被组合的双频段长期演进信号激励时,所提出的2-D-CPWL模型可以获得与2-D-MMP模型几乎相同的模型精度和数字预失真性能。
A 2-D-canonical piecewise linear (2-D-CPWL) function-based behavioral model is proposed for concurrent dual-band power amplifiers (PAs) in this letter. The model is derived from the Volterra-based 2-D-modified memory polynomial (2-D-MMP) model by replacing the high-order terms with CPWL and it can provide a lower complexity than the 2-D-MMP model and some existing CPWL-based dual-band models. The least-square algorithm can be used to extract the model coefficients. Experimental results show that the proposed 2-D-CPWL model can achieve nearly the same model accuracy and digital predistortion performance compared with the 2-D-MMP model, when a dual-band PA is excited by a combined dual-band long-term evolution signals.
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