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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 (2016) A low complexity pre‐distortion scheme for power amplifier linearization in wideband applications. International Journal of Communication Systems, 30 (e3177). 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 20 MHz single carrier long‐term evolution signal and two‐carrier long‐term evolution signal and instantaneous to average ratio of 6.2 dB at 0.01% complementary cumulative distribution function (CCDF). The results of simulation analysis show a slight improvement in adjacent channel leakage ratio performance with 30% reduction in the number of floating point operations compared with conventional pre‐distortion techniques.

    Item Type: Article
    Keywords: Power amplifier; Nonlinear autoregressive; Pre‐distortion; Memory polynomial;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 11527
    Identification Number: https://doi.org/10.1002/dac.3177
    Depositing User: Dr. Ronan Farrell
    Date Deposited: 30 Oct 2019 15:10
    Journal or Publication Title: International Journal of Communication Systems
    Publisher: Wiley and Sons
    Refereed: Yes
    URI:

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