Signal reliability improvement using selection combining based macro-diversity for off-body communications at 868 MHz

Seong Ki Yoo, Simon Cotton, Adrian McKernan, William Scanlon

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

1 Citation (Scopus)
7 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 publication2015 9th European Conference on Antennas and Propagation (EuCAP)
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)9788890701856
Publication statusPublished - 31 Aug 2015
Externally publishedYes
Event9th European Conference on Antennas and Propagation - Lisbon, Portugal
Duration: 12 Apr 201517 Apr 2015

Conference

Conference9th European Conference on Antennas and Propagation
Abbreviated titleEuCAP
CountryPortugal
CityLisbon
Period12/04/1517/04/15

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