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

Seong Ki Yoo, Simon Cotton

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

4 Citations (Scopus)

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 publicationThe 8th European Conference on Antennas and Propagation (EuCAP 2014)
PublisherIEEE
Pages992-996
Number of pages5
ISBN (Electronic)9788890701849
DOIs
Publication statusPublished - 18 Sep 2014
Externally publishedYes
Event8th European Conference on Antennas and Propagation - , Netherlands
Duration: 6 Apr 201411 Apr 2014

Conference

Conference8th European Conference on Antennas and Propagation
Abbreviated titleEuCAP 2014
CountryNetherlands
Period6/04/1411/04/14

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Yoo, S. K., & Cotton, S. (2014). Improving signal reliability for indoor off-body communications using spatial diversity at the base station. In The 8th European Conference on Antennas and Propagation (EuCAP 2014) (pp. 992-996). IEEE. https://doi.org/10.1109/eucap.2014.6901897