Improving signal reliability for indoor off–body communications using spatial diversity at the base station

Seong Ki Yoo, Simon L. Cotton

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

4 Citations (Scopus)
205 Downloads (Pure)

Abstract

In this paper, we investigate the potential improvement in signal reliability for indoor off-body communications when using spatial diversity at the base station. In particular, we utilize two hypothetical indoor base stations operating at 5.8 GHz each featuring four antennas which are spaced at either half- or one-wavelength apart. Three on-body locations are considered along with four types of user movement. The cross-correlation between the received signal envelopes observed at each base station antenna element was calculated and found to be always less than 0.5. Selection, maximal ratio, and equal gain combining of the received signal has shown that the greatest improvement is obtained when the user is mobile, with a maximum diversity gain of 11.34 dB achievable when using a four branch receiver. To model the fading envelope obtained at the output of the virtual combiners, we use diversity specific, theoretical probability density functions for multi-branch receivers operating in Nakagami-m fading channels. It is shown that these equations provide an excellent fit to the measured channel data.
Original languageEnglish
Title of host publicationProceedings of 2014 8th European Conference on Antennas and Propagation (EuCAP)
PublisherIEEE Computer Society
Pages857-861
Number of pages5
ISBN (Print)9788890701849
DOIs
Publication statusPublished - Apr 2014
Event8th European Conference on Antennas and Propagation, EuCAP 2014 - The Hague, Netherlands
Duration: 06 Apr 201411 Apr 2014
http://www.eucap2014.org/

Conference

Conference8th European Conference on Antennas and Propagation, EuCAP 2014
CountryNetherlands
CityThe Hague
Period06/04/201411/04/2014
Internet address

Bibliographical note

INSPEC Accession Number:14612359

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  • Cite this

    Yoo, S. K., & Cotton, S. L. (2014). Improving signal reliability for indoor off–body communications using spatial diversity at the base station. In Proceedings of 2014 8th European Conference on Antennas and Propagation (EuCAP) (pp. 857-861). IEEE Computer Society. https://doi.org/10.1109/EuCAP.2014.6901897