A flexible method of LUT indexing in digital predistortion linearization of RF power amplifiersA FLEXIBLE METHOD OF LUT INDEXING IN DIGITAL PREDISTORTION LINEARIZATION OF RF POWER AMPLIFIERS
Javad Yavand Hassani and Mahmoud Kamarei
Department of Electrical and Computer Engineering University of Tehran
ABSTRACT
A new method of lookup table (LUT) indexing for using in the RF power amplifier linearization with digital predistortion is presented. In this method the density of table entries in a specified amplitude region, is proportional to the aniplifier nonlinearity in that region. This method is simple, flexible, and adaptive. Simulation results show considerable improvement of Adjacent Channel Interference (ACI) compared to the conventional indexing with amplitude method.
1.4
1.2
1
.-
S
m m
0.8
1.
INTRODUCTION
0.6
Linearization of Non Linear RF Power Amplifier (NLPA) is ……
