Interference and SINR in Millimeter Wave and Terahertz Communication Systems With Blocking and Directional Antennas

Vitaly Petrov, Mikhail Komarov, Dmitri Moltchanov, Josep Miquel Jornet, Yevgeni Koucheryavy

    Research output: Contribution to journalArticleScientificpeer-review

    91 Citations (Scopus)

    Abstract

    The fifth generation wireless systems are expected to rely on a large number of small cells to massively offload traffic from the cellular and even from the wireless local area networks. To enable this functionality, mm-wave (EHF) and Terahertz (THF) bands are being actively explored. These bands are characterized by unique propagation properties compared with microwave systems. As a result, the interference structure in these systems could be principally different to what we observed so far at lower frequencies. In this paper, using the tools of stochastic geometry, we study the systems operating in the EHF/THF bands by explicitly capturing three phenomena inherent for these frequencies: 1) high directivity of the transmit and receive antennas; 2) molecular absorption; and 3) blocking of high-frequency radiation. We also define and compare two different antenna radiation pattern models. The metrics of interest are the mean interference and the signal-to-interference-plus-noise (SINR) ratio at the receiver. Our results reveal that: 1) for the same total emitted energy by a Poisson field of interferers, both the interference and SINR significantly increase when simultaneously both transmit and receive antennas are directive and 2) blocking has a profound impact on the interference and SINR creating much more favorable conditions for communications compared with no blocking case.

    Original languageEnglish
    Pages (from-to)1791-1808
    Number of pages18
    JournalIEEE Transactions on Wireless Communications
    Volume16
    Issue number3
    DOIs
    Publication statusPublished - 1 Mar 2017
    Publication typeA1 Journal article-refereed

    Keywords

    • 5G systems
    • blocking
    • directional antennas
    • Interference
    • millimeter waves
    • terahertz band

    Publication forum classification

    • Publication forum level 3

    ASJC Scopus subject areas

    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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