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Compensation of the nonlinear power amplifier by using SCPWL predistorter with genetic algorithm in OFDM technique
Other Title(s)
تعويض التشويه غير الخطي لمضخم القدرة العالية في أنظمة OFDM باستخدام المعوض SCPWL مع الخوارزمية الجينية
Joint Authors
al-Jafari, Muhannad Adnan Muhammad
al-Rikabi, Husayn Muhsin Hadi
Fakhr al-Din, Hasan Falah M.
Source
Issue
Vol. 24, Issue 6 (30 Jun. 2018), pp.29-40, 12 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2018-06-30
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Topics
- Simulation models
- Amplifiers
- Radio communication
- Congenital malformations
- Genetic algorithms
- Orthogonal frequency division multiplexing
Abstract EN
The High Power Amplifiers (HPAs), which are used in wireless communication, are distinctly characterized by nonlinear properties.
The linearity of the HPA can be accomplished by retreating an HPA to put it in a linear region on account of power performance loss.
Meanwhile the Orthogonal Frequency Division Multiplex signal is very rough.
Therefore, it will be required a large undo to the linear action area that leads to a vital loss in power efficiency.
Thereby, back-off is not a positive solution.
A Simplicial Canonical Piecewise-Linear (SCPWL) model based digital predistorters are widely employed to compensating the nonlinear distortion that introduced by a HPA component in OFDM technology.
In this paper, the genetic algorithm has been used to optimized the SCPWL coefficients by using Matlab 2015b, and then the Bit Error Rate (BER) performance has been evaluated for OFDM signal with 16-QAM and 64-QAM modulations in three cases, with nonlinear effects, without nonlinear effects (ideal case), with SCPWL and with nonlinear effects (compensated case)).
The simulation results showed that the predistorter that adjusted by the genetic algorithm accomplishes huge execution change by successfully compensating the nonlinearity and reducing the input and output back-off (IBO, OBO) of the HPA.
American Psychological Association (APA)
al-Jafari, Muhannad Adnan Muhammad& al-Rikabi, Husayn Muhsin Hadi& Fakhr al-Din, Hasan Falah M.. 2018. Compensation of the nonlinear power amplifier by using SCPWL predistorter with genetic algorithm in OFDM technique. Journal of Engineering،Vol. 24, no. 6, pp.29-40.
https://search.emarefa.net/detail/BIM-837706
Modern Language Association (MLA)
al-Jafari, Muhannad Adnan Muhammad…[et al.]. Compensation of the nonlinear power amplifier by using SCPWL predistorter with genetic algorithm in OFDM technique. Journal of Engineering Vol. 24, no. 6 (Jun. 2018), pp.29-40.
https://search.emarefa.net/detail/BIM-837706
American Medical Association (AMA)
al-Jafari, Muhannad Adnan Muhammad& al-Rikabi, Husayn Muhsin Hadi& Fakhr al-Din, Hasan Falah M.. Compensation of the nonlinear power amplifier by using SCPWL predistorter with genetic algorithm in OFDM technique. Journal of Engineering. 2018. Vol. 24, no. 6, pp.29-40.
https://search.emarefa.net/detail/BIM-837706
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 33-34
Record ID
BIM-837706