Performance of adaptive algorithms for compensation of radio over fiber links

Atso Hekkala, Mika Lasanen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    17 Citations (Scopus)

    Abstract

    This paper considers the adaptive predistortion of the nonlinear distortions in a Radio over Fiber (RoF) link. In particular, we modify and compare two adaptive algorithms developed originally for the compensation of the linear systems, namely LMS and variable step size normalized LMS (VS NLMS). A recursive least squares (RLS) solution is used as a reference. Our simulation results indicate that over 40 dB improvement of adjacent channel power ratios can be achieved via the predistortion. Furthermore, we show that in the compensation of the nonlinear RoF link, the LMS can be used in such a way that its performance is comparable to more complex RLS.
    Original languageEnglish
    Title of host publication2009 Wireless Telecommunications Symposium
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages1-5
    ISBN (Electronic)978-1-4244-2589-1
    ISBN (Print)978-1-4244-2588-4
    DOIs
    Publication statusPublished - 2009
    MoE publication typeNot Eligible
    EventWireless Telecommunications Symposium, WTS 2009 - Prague, Czech Republic
    Duration: 22 Apr 200924 Apr 2009

    Conference

    ConferenceWireless Telecommunications Symposium, WTS 2009
    Abbreviated titleWTS 2009
    CountryCzech Republic
    CityPrague
    Period22/04/0924/04/09

    Keywords

    • LMS
    • polynomial predistorter
    • predistortion
    • RLS
    • RoF
    • VS NLMS

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