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An Investigation of RF Pollution Caused by IEEE 802.15.4 Body Area Networks
Blekinge Institute of Technology, School of Engineering.
2013 (English)Independent thesis Basic level (degree of Bachelor)Student thesis
Abstract [en]

Advancement in wireless communication technologies such as wearable sensors together with recent developments in embedded computing area is enabling the design, development and implementation of body area networks. These network developments mainly use the IEEE 802.15.4 which is aimed at low power, short range communications. The body area network is a deployment of an innovative healthcare monitoring application. However, little is known about the impact of 802.15.4 on the performance of other communication devices. Due to the constant increase in devices sharing the unlicensed 2.4GHz ISM band, interference is becoming a problem of interest to researchers. In this thesis, we experimentally investigate the Radio Frequency (RF) pollution Caused by IEEE 802.15.4 body area networks. Measurement was conducted with a shimmer2r node(transmitter) attached to the human body and the Tmote Sky sensor nodes(receivers) which are deployed on three floors of the Telecommunication Network Group (TKN) Technical University(TU) building in Berlin. The average Received Signal Strength Indicator (RSSI), Link Quality Indicator (LQI) and Packet Reception Rate (PRR) was examined as a function of transmitter to receiver distance. The best LQI was observed at 0 dBm and was consistent whereas the worst LQI was at -25 dBm. Lastly, the RF pollution metric was defined based on power levels and the percentage of nodes polluted. With a transmission power level of -15 dBm, the observed RF pollution for a co-located network was minimal while of 0 dBm, the pollution effects were relatively higher.

Place, publisher, year, edition, pages
2013. , 37 p.
Keyword [en]
RF Interference, IEEE 802.15.4, Body Area Networks
National Category
Signal Processing Telecommunications
URN: urn:nbn:se:bth-5624Local ID: diva2:833014
0046 (0) 738 915 296Available from: 2015-04-22 Created: 2013-10-07 Last updated: 2015-06-30Bibliographically approved

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