Spatial diversity for off-body communications in an indoor populated environment at 5.8 GHz.

A.J. Ali, S.L. Cotton, W.G. Scanlon

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

    12 Citations (Scopus)

    Abstract

    Human activity in the vicinity of body-centric wireless communications systems often affects received signal characteristics. In particular, pedestrian movements may induce temporal fading and cause shadowing events in situations where an individual or group obstructs the dominant signal path. In this paper, we report results from a series of carefully controlled experiments aimed at assessing the impact of using multiple-antenna techniques to reduce the influence of pedestrian effects on off-body radio-links. Using two co-located, spatially-separated bodyworn antennas mounted on the anterior human torso, it was found that the cross-correlation coefficient value between branches was always less than 0.7, irrespective of the number of nearby pedestrians. The difference in mean signal level between receiver branches generally decreased as pedestrian numbers increased. Post-detection selection combining of the measurement data has shown that diversity gain improves with increased human traffic in the local environment.
    Original languageUndefined
    Title of host publicationAntennas and Propagation Conference (LAPC 2009)
    Place of PublicationLoughborough
    PublisherIEEE
    Pages641-644
    Number of pages4
    ISBN (Print)978-1-4244-2720-8
    DOIs
    Publication statusPublished - 17 Nov 2009
    Event2009 Loughborough Antennas & Propagation Conference, LAPC 2009 - Burleigh Court Conference Centre, Loughborough University, Loughborough, United Kingdom
    Duration: 16 Nov 200917 Nov 2009

    Publication series

    Name
    PublisherIEEE

    Conference

    Conference2009 Loughborough Antennas & Propagation Conference, LAPC 2009
    Abbreviated titleLAPC
    CountryUnited Kingdom
    CityLoughborough
    Period16/11/0917/11/09

    Keywords

    • IR-76714
    • EWI-20033
    • METIS-276432

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