Title :
Comparison of neural network adaptive predistortion techniques for satellite down links
Author :
Langlet, F. ; Abdulkader, H. ; Roviras, D. ; Mallet, A. ; Castanié, F.
Author_Institution :
ENSEEIHT, Toulouse, France
Abstract :
In this paper, we present adaptive predistortion techniques for two satellite down links. The first link is a memoryless amplifier that gives two kind of distortions: amplitude distortion (AM/AM conversion) and phase distortion (AM/PM conversion). The second link is an amplifier with memory modeled by a memoryless amplifier followed by a linear filter. Predistortions are realized with multilayer perceptron (MLP) neural networks (NN) associated with the backpropagation (BP) algorithm. For the first down link we compare two adaptive predistorsions whereas only one predistorsion technique is applied to the second down link
Keywords :
adaptive signal processing; backpropagation; memoryless systems; multilayer perceptrons; satellite links; telecommunication computing; AM/AM conversion; AM/PM conversion; BP; MLP; amplitude distortion; backpropagation; linear filter; memoryless amplifier; multilayer perceptron; neural network adaptive predistortion techniques; neural networks; phase distortion; satellite down links; Adaptive systems; Digital filters; Multilayer perceptrons; Neural networks; Nonlinear distortion; Nonlinear filters; Payloads; Phase distortion; Predistortion; Satellite broadcasting;
Conference_Titel :
Neural Networks, 2001. Proceedings. IJCNN '01. International Joint Conference on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7044-9
DOI :
10.1109/IJCNN.2001.939111
