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    A low complexity pre-distortion scheme for power amplifier linearization in wideband applications


    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:

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