摘要
通用Volterra级数行为模型由于较高计算复杂性使它受限用于弱非线性放大器。为了减少Volterra级数计算复杂性和级数核系数的数量,本文提出了两种方案:基于正交多项式函数Chebyshev和基于正交多项式函数Laguerre的Volterra级数,推导了Volterra-Chebyshev和Volterra-Laguerre的行为模型数学表达式,并对Volterra-Laguerre模型进行了仿真。数学理论分析和仿真结果表明,与普通Volterra级数模型相比,Volterra-Chebyshev和Volterra-Laguerre行为模型具有简化的结构和减少的系数。
Volterra-series behavioral model for Radio Frequency （RF） power amplifier is limited to ＂weak＂ nonlinearity because of high computational complexity. In order to reduce computational complexity or the number of coefficient of Volterra-series kernels, the two approaches, based on Chebyshev orthogonal polynomials function and Laguerre orthogonal polynomials function, are proposed, and the mathematical expressions of Volterra-Chebyshev and Volterra-Laguerre behavioral model is derived, and Volterra-laguerre model is simulated. Mathematical analysis and simulation results show that Volterra-Chebyshev and Volterra-Laguerre behavioral model have a simplified structure and reductive coefficients than general Volterra-series model.
出处
《电子与信息学报》
EI
CSCD
北大核心
2008年第8期2021-2024,共4页
Journal of Electronics & Information Technology
基金
高等学校博士学科点专项科研基金(20030013010)
国家自然科学基金(50677004)资金资助
