Signal Reliability Improvement Using Selection Combining Based Macro-Diversity for Off-Body Communications At 868 MHz

Seong Ki Yoo, Simon L. Cotton, Adrian McKernan, William G. Scanlon

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

1 Citation (Scopus)
63 Downloads (Pure)

Abstract

This paper investigates the potential improvement in signal reliability for outdoor short-range off-body communications channels at 868 MHz using the macro-diversity offered by multiple co-located base stations. In this study, ten identical hypothetical base stations were positioned equidistantly around the perimeter of a rectangle of length 6.67 m and width 3.3 m. A body worn node was placed on the central chest region of an adult male. Five scenarios, each considering different user trajectories, were then analyzed to test the efficacy of using macro-diversity when the desired link is subject to shadowing caused by the human body. A number of selection combining based macro-diversity configurations consisting of four and then ten base stations were considered. It was found that using a macro-diversity system consisting of four base stations (or equivalently signal branches), a maximum diversity gain of 22.5 dB could be obtained while implementing a 10-base station setup this figure could be improved to 25.2 dB.
Original languageEnglish
Title of host publicationProceedings of 9th European Conference on Antennas and Propagation (EuCAP 2015)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Print)978-88-907018-5-6
Publication statusPublished - May 2015
Event9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal
Duration: 13 May 201517 May 2015
http://www.eucap2015.org/

Conference

Conference9th European Conference on Antennas and Propagation, EuCAP 2015
Abbreviated titleEuCAP 2015
CountryPortugal
CityLisbon
Period13/05/201517/05/2015
Internet address

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