Secure degrees of freedom for the MIMO wiretap channel with a multiantenna cooperative jammer

Mohamed Nafea, Aylin Yener

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

    15 Scopus citations

    Abstract

    A multiple antenna Gaussian wiretap channel with a multiantenna cooperative jammer (CJ) is considered and the secure degrees of freedom (s.d.o.f.), with N antennas at the sender, receiver, and eavesdropper, is derived for all possible values of the number of antennas at the cooperative jammer, K. In particular, the upper and lower bounds for the s.d.o.f. are provided for different ranges of K and shown to coincide. Gaussian signaling both for transmission and jamming is shown to be sufficient to achieve the s.d.o.f. of the channel, when the s.d.o.f. is integer-valued. By contrast, when the channel has a non-integer s.d.o.f., structured signaling and joint signal space and signal scale alignment are employed to achieve the s.d.o.f.

    Original languageEnglish (US)
    Title of host publication2014 IEEE Information Theory Workshop, ITW 2014
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages626-630
    Number of pages5
    ISBN (Electronic)9781479959990
    DOIs
    StatePublished - Dec 1 2014
    Event2014 IEEE Information Theory Workshop, ITW 2014 - Hobart, Australia
    Duration: Nov 2 2014Nov 5 2014

    Publication series

    Name2014 IEEE Information Theory Workshop, ITW 2014

    Other

    Other2014 IEEE Information Theory Workshop, ITW 2014
    CountryAustralia
    CityHobart
    Period11/2/1411/5/14

    All Science Journal Classification (ASJC) codes

    • Information Systems
    • Computer Networks and Communications

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