Covert Communication in Backscatter Radio

Khurram Shahzad, Xiangyun Zhou

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

    29 Citations (Scopus)

    Abstract

    Covert communication in backscatter radio systems is considered, where the transmitter controls its transmit power to keep the transponder's response hidden, while a warden tries to detect this covert communication. To achieve covertness, we propose a non-conventional transmission scheme where the transmitter emits noise-like signal with transmit power varying across different communication slots. Under the assumption of a radiometer as the detector at the warden, we first derive the optimal detection threshold for this detector. Next, building upon the detection performance of warden, we analyze the condition on the transmit power to achieve a target level of covertness. Our numerical results illustrate the price a backscatter system has to pay, in terms of bit error rate, for achieving covert communication.

    Original languageEnglish
    Title of host publication2019 IEEE International Conference on Communications, ICC 2019 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781538680889
    DOIs
    Publication statusPublished - May 2019
    Event2019 IEEE International Conference on Communications, ICC 2019 - Shanghai, China
    Duration: 20 May 201924 May 2019

    Publication series

    NameIEEE International Conference on Communications
    Volume2019-May
    ISSN (Print)1550-3607

    Conference

    Conference2019 IEEE International Conference on Communications, ICC 2019
    Country/TerritoryChina
    CityShanghai
    Period20/05/1924/05/19

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