Abstract
In Wireless Sensor Networks (WSNs) the majority of the devices provide access to the Received Signal Strength Indicator (RSSI), which has been used as a means to enable different services and applications like localization, geographic routing and link quality estimation. Notwithstanding the popularity of using RSSI for localization, academic research showed that RSSI-based distance estimate is rather unreliable due to the random attenuation experienced by the radio signals, as the multipath fading. In this paper we propose a simple way to improve the RSSI reliability, averaging samples collected at different frequencies by a CC2420 radio, which implements the IEEE 802.15.4 standard, both in real indoor and outdoor scenarios. For this purpose, we introduce a simple communication protocol to coordinate data exchange between nodes, that exploits multichannel transmission in order to mitigate the multipath effect that hampers ranging estimation as well as wireless communication.
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Bardella, A., Bui, N., Zanella, A., Zorzi, M. (2010). An Experimental Study on IEEE 802.15.4 Multichannel Transmission to Improve RSSI–Based Service Performance. In: Marron, P.J., Voigt, T., Corke, P., Mottola, L. (eds) Real-World Wireless Sensor Networks. REALWSN 2010. Lecture Notes in Computer Science, vol 6511. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17520-6_15
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DOI: https://doi.org/10.1007/978-3-642-17520-6_15
Publisher Name: Springer, Berlin, Heidelberg
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