Computationally efficient approximated matrix inversion with application to crosstalk precoding in downstream VDSL

Youming Li, Leshem Amir, Liming Fang

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

    4 Scopus citations

    Abstract

    An algorithm for approximating crosstalk channel matrix inversion is proposed in this paper. The algorithm decomposes the crosstalk channel matrix into a tridiagonal matrix plus a residual matrix composed of the remaining elements. By using diagonal dominance property, the inverse of the crosstalk channel matrix is approximated. Based on these results we propose a novel precoding method with lower computational complexity for canceling the crosstalk in downstream VDSL. Computer simulation results based on measured channel data are provided to verify the efficiency of the proposed algorithm.

    Original languageEnglish
    Title of host publicationIWCMC 2007
    Subtitle of host publicationProceedings of the 2007 International Wireless Communications and Mobile Computing Conference
    Pages429-433
    Number of pages5
    DOIs
    StatePublished - 2007
    EventIWCMC 2007: 2007 International Wireless Communications and Mobile Computing Conference - Honolulu, HI, United States
    Duration: 12 Aug 200716 Aug 2007

    Publication series

    NameIWCMC 2007: Proceedings of the 2007 International Wireless Communications and Mobile Computing Conference

    Conference

    ConferenceIWCMC 2007: 2007 International Wireless Communications and Mobile Computing Conference
    Country/TerritoryUnited States
    CityHonolulu, HI
    Period12/08/0716/08/07

    Keywords

    • Crosstalk cancellation
    • Digital subscriber line
    • Matrix splitting
    • Vectoring

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