In-Band Full-Duplex Communications for Cellular Networks with Partial Uplink/Downlink Overlap

Ahmad Alammouri, Hesham Elsawy, Osama Amin, Mohamed-Slim Alouini

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

    Abstract

    In-band full-duplex (FD) communications have been optimistically promoted to improve the spectrum utilization in cellular networks. However, the explicit impact of spatial interference, imposed by FD communications, on uplink and downlink transmissions has been overlooked in the literature. This paper presents an extensive study of the explicit effect of FD communications on the uplink and downlink performances. For the sake of rigorous analysis, we develop a tractable framework based on stochastic geometry toolset. The developed model accounts for uplink truncated channel inversion power control in FD cellular networks. The study shows that FD communications improve the downlink throughput at the expense of significant degradation in the uplink throughput. Therefore, we propose a novel fine-grained duplexing scheme, denoted as α-duplex scheme, which allows a partial overlap between uplink and downlink frequency bands. To this end, we show that the amount of the overlap can be optimized via adjusting α to achieve a certain design objective.
    Original languageEnglish (US)
    Title of host publication2015 IEEE Global Communications Conference (GLOBECOM)
    PublisherIEEE
    ISBN (Print)9781479959525
    DOIs
    StatePublished - Mar 28 2016

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