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    Digital Pre-Distortion Based on Nonlinear Autoregressive With Exogenous Inputs


    Varahram, Pooria and Dooley, John and Finnerty, Keith and Farrell, Ronan (2016) Digital Pre-Distortion Based on Nonlinear Autoregressive With Exogenous Inputs. IEEE Microwave and Wireless Components Letters, 26 (5). pp. 364-366. ISSN 1558-1764

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    Abstract

    In this letter, a new pre-distortion technique for power amplifiers in wideband applications is proposed. The proposed pre-distortion technique is based on Nonlinear Autoregressive with Exogenous inputs (NARX). The forward path of the proposed predictive method is based on the memory polynomial. Experimental validation is carried out with 4 carrier WCDMA signal with 20MHz bandwidth and PAPR = 9.8 dB. The results show significant reduction in the number of coefficients with comparable performance in terms of adjacent channel leakage ratio (ACLR) and error vector magnitude (EVM) to Volterra series techniques.

    Item Type: Article
    Keywords: Memory effects; memory polynomial; NARX; power amplifier (PA); Volterra series
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 10282
    Identification Number: https://doi.org/10.1109/LMWC.2016.2549178
    Depositing User: Dr. Ronan Farrell
    Date Deposited: 05 Dec 2018 15:11
    Journal or Publication Title: IEEE Microwave and Wireless Components Letters
    Publisher: IEEE
    Refereed: Yes
    URI:

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