Varahram, Pooria and Dooley, John and Finnerty, Keith and Farrell, Ronan (2017) A low complexity pre-distortion scheme for power amplifier linearization in wideband applications. International Journal of Communication Systems, 30. ISSN 1074-5351

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Abstract

In this paper, a nonlinear autoregressive with exogenous inputs (NARX) digital pre-distortion scheme to linearize power amplifiers is proposed. The proposed NARX digital pre-distortion gives better accuracy and spectral leakage suppression compared with other commonly used Volterra-based techniques. The stability criterion of the NARX digital pre-distortion is derived from the frequency domain analysis. Simulation is carried out with a 20MHz single carrier long-term evolution signal and two-carrier long-term evolution signal and instantaneous to average ratio of 6.2dB at 0.01% complementary cumulative distribution function (CCDF). The results ofsimulation analysisshow aslightimprovementin adjacent channelleakageratio performance with 30% reduction in the number of floating point operations compared with conventional predistortion techniques.

Item Type:	Article
Keywords:	power amplifier; nonlinear; autoregressive; pre-distorition; memory polynomial;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	12695
Identification Number:	https://doi.org/10.1002/dac.3177
Depositing User:	Ronan Farrell
Date Deposited:	02 Apr 2020 10:51
Journal or Publication Title:	International Journal of Communication Systems
Publisher:	Wiley and Sons
Refereed:	Yes
URI:	Publisher

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