Addressing hidden terminals in WLANs with zero forcing coordinated beamforming

Sanjeeb Shrestha, Gengfa Fang, Eryk Dutkiewicz, Xiaojing Huang

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

    4 Citations (Scopus)

    Abstract

    We present here a new technique that can be used to address a well-known Hidden Terminal problem in Wireless Local Area Networks. Specifically, Zero Forcing Coordinated Beamforming can be applied, in a hidden terminal scenario, in order to null the signal of the interfering transmitter so that desired transmission can take place without collision at the receiver. Basically, a precoding range of a receiver is used as a determinant in order to take a nulling decisions based on the notion that a successful transmission depends on the interference free condition at the receiver. We demonstrate the feasibility of the approach in an USRP2/GNURadio test-bed prototype. Our scheme improves the SNR and Effective SNR from about 5 to 11 dB in a hidden terminal scenario and maintains collision free simultaneous transmissions.

    Original languageEnglish
    Title of host publication14th International Symposium on Communications and Information Technologies, ISCIT 2014
    Place of PublicationPiscataway, NJ
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages249-253
    Number of pages5
    ISBN (Electronic)9781479944163
    DOIs
    Publication statusPublished - 2014
    Event14th International Symposium on Communications and Information Technologies, ISCIT 2014 - Incheon, Korea, Republic of
    Duration: 24 Sep 201426 Sep 2014

    Other

    Other14th International Symposium on Communications and Information Technologies, ISCIT 2014
    CountryKorea, Republic of
    CityIncheon
    Period24/09/1426/09/14

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  • Cite this

    Shrestha, S., Fang, G., Dutkiewicz, E., & Huang, X. (2014). Addressing hidden terminals in WLANs with zero forcing coordinated beamforming. In 14th International Symposium on Communications and Information Technologies, ISCIT 2014 (pp. 249-253). [7011910] Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ISCIT.2014.7011910