TITLE:
Pruned Volterra Models with Memory Effects for Nonlinear Power Amplifiers
AUTHORS:
Pengpeng Li, Qingfang Zhang, Ping Wang, Zhongshan Xie, Bing Liu
KEYWORDS:
Volterra Series; Power Amplifier (PA); Behavioral Model; Memory Effect
JOURNAL NAME:
Communications and Network,
Vol.5 No.3C,
October
7,
2013
ABSTRACT:
In this letter, a novel model is proposed for modeling
the nonlinearity and memory effects of power amplifiers. The classical Volterra
model is modified through a function of the sum of nonlinearity order with sum
of memory length. The parameters of this model can be extracted in digital
domain since the model is analyzed based on the envelope signals. The model we
proposed enables a substantial reduction in the number of coefficients
involved, and with excellent accuracy.