Paper Info
Title
An adaptive fuzzy logic system for the compensation of nonlinear distortion in wireless power amplifiers.
Abstract
Computational intelligent systems are becoming an increasingly attractive solution for power amplifier (PA) behavioural modelling, due to their excellent approximation capability. This paper utilizes an adaptive fuzzy logic system (AFLS) for the modelling of the highly nonlinear MIMIX CFH2162-P3 PA. Moreover, PA’s inverse model based also on AFLS has been developed in order to act as a pre-distorter unit. Driving an LTE 1.4 MHz 64 QAM signal at 880 MHz as centre frequency at PA’s input, very good modelling performance was achieved, for both PA’s forward and inverse dynamics. A comparative study of AFLS and neural networks (NN) has been carried out to establish AFLS as an effective, robust and easy-to-implement baseband model, which is suitable for inverse modelling of PAs and capable to be used as an effective digital pre-distorter. Pre-distortion system based on AFLS achieved distortion suppression of 84.2%, compared to the 48.4% gained using the NN-based equivalent scheme.
Year
DOI
Venue
2018
10.1007/s00521-017-2849-3
Neural Computing and Applications
Keywords
Field
DocType
Linearization, Pre-distortion, RF power amplifiers, Neuro-fuzzy systems, Neural networks
Baseband,Quadrature amplitude modulation,Nonlinear system,Control theory,Inverse dynamics,Nonlinear distortion,Distortion,Linearization,Mathematics,Amplifier
Journal
Volume
Issue
ISSN
30
8
1433-3058
Citations 
PageRank 
References 
0
0.34
6
Authors
3
Name
Order
Citations
PageRank
Mina Vaskovic100.34
Vassilis S. Kodogiannis227235.17
Djuradj Budimir3343.78