Sub-band Digital Predistortion for Noncontiguous Transmissions: Algorithm Development and Real-Time Prototype Implementation

Mahmoud Abdelaziz, Chance Tarver, Kaipeng Li, Lauri Anttila, Raul Martinez, Mikko Valkama, Joseph R Cavallaro

    Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

    9 Sitaatiot (Scopus)

    Abstrakti

    This article proposes a novel, reduced complexity, block-adaptive digital predistortion (DPD) technique for mitigating the spurious emissions that occur when amplifying spectrally noncontiguous signals with a nonlinear power amplifier (PA). The introduced DPD solution is designed for real-time scenarios where a loop delay exists in the DPD system. By a proper choice of the DPD parameters, the technique is shown to be robust against arbitrarily long loop delays while not sacrificing DPD linearization performance and convergence speed. Moreover, the proposed DPD solution has lower complexity compared to previously proposed solutions in the literature while giving excellent linearization performance in terms of mitigating the spurious emissions. Real-time implementations of the algorithm on the WARP platform are developed, including considerations for several key trade-offs in the hardware design to balance the robustness, performance and complexity. The simulations and real-time FPGA experiments evidence excellent and robust performance in real-life situations with highly nonlinear PAs and arbitrary loop delays.
    AlkuperäiskieliEnglanti
    Otsikko2015 49th Asilomar Conference on Signals, Systems and Computers
    KustantajaIEEE
    Sivumäärä7
    ISBN (elektroninen)978-1-4673-8576-3
    DOI - pysyväislinkit
    TilaJulkaistu - helmik. 2016
    OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
    TapahtumaASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS -
    Kesto: 1 tammik. 1900 → …

    Julkaisusarja

    Nimi
    ISSN (elektroninen)1058-6393

    Conference

    ConferenceASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS
    Ajanjakso1/01/00 → …

    Julkaisufoorumi-taso

    • Jufo-taso 1

    Sormenjälki

    Sukella tutkimusaiheisiin 'Sub-band Digital Predistortion for Noncontiguous Transmissions: Algorithm Development and Real-Time Prototype Implementation'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

    Siteeraa tätä