The interference wiretap channel with an arbitrarily varying eavesdropper: Aligning interference with artificial noise

Xiang He, Aylin Yener

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    7 Scopus citations

    Abstract

    In this work, a Gaussian two-user MIMO interference channel is considered in the presence of an external eavesdropper whose channel is completely unknown to the legitimate communication parties and can be varying in an arbitrary fashion from one channel use to the next. We improve our recent result by deriving a larger achievable secrecy degrees of freedom region. In the achievable scheme, the transmitter injects artificial noise to confuse the eavesdropper, and at the same time aligns the injected noise with the interference from the other user at the intended receiver. The achieved secure degrees of freedom are shown to be closely connected to the rank of the effective channel matrix through which the eavesdropper observes the artificial noise. The precoding matrix is then designed to ensure that this rank cannot be reduced under any possible Eve's channel state.

    Original languageEnglish (US)
    Title of host publication2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012
    Pages204-211
    Number of pages8
    DOIs
    Publication statusPublished - Dec 1 2012
    Event2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012 - Monticello, IL, United States
    Duration: Oct 1 2012Oct 5 2012

    Publication series

    Name2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012

    Other

    Other2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012
    CountryUnited States
    CityMonticello, IL
    Period10/1/1210/5/12

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    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications
    • Computer Science Applications

    Cite this

    He, X., & Yener, A. (2012). The interference wiretap channel with an arbitrarily varying eavesdropper: Aligning interference with artificial noise. In 2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012 (pp. 204-211). [6483219] (2012 50th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2012). https://doi.org/10.1109/Allerton.2012.6483219