Xi'an Jiaotong University

Xiaolong Zhao

Disclosed is a method and system for forward synthesis of a digital predistortion nonlinear model derived from a circuit description, used for nonlinear modeling of a power amplifier. The method includes establishing a frequency band-continuous time-domain expression, transforming the frequency band expression to a baseband expression, and transforming the baseband-continuous time-domain expression to a baseband-discrete time-domain expression. The present disclosure can obtain the DPD nonlinear model by forward synthesis, provide an accurate model structure and initial parameter values for establishing the RF power amplifier model in the power amplifier nonlinear predistortion technology, make full use of the prior knowledge of the RF power amplifier system to obtain the nonlinear model structure that best conforms to the physical essence, and directly obtain the minimum memory depth and nonlinear order, and can be integrated into an RF power amplifier circuit simulation software.

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Xi'an, China

Xiaolong Zhao