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Using RSSI value for distance estimation in wireless sensor networks based on ZigBee

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4 Author(s)
K. Benkic ; SPaRC Laboratory, UM-FERI Maribor, Smetanova 17, 2000, Slovenia ; M. Malajner ; P. Planinsic ; Z. Cucej

In todaypsilas modern wireless ZigBee-based modules, there are two well-known values for link quality estimation: RSSI (received signal strength indicator) and LQI (link quality indicator). In respect to wireless channel models, received power should be a function of distance. From this aspect, we believed that RSSI can be used for evaluating distances between nodes. The experiment described in this paper indicates that RSSI is, in fact, a poor distance estimator when using wireless sensor networks in buildings. Reflection, scattering and other physical properties have an extreme impact on RSSI measurement and so we can conclude: RSSI is a bad distance estimator.

Published in:

2008 15th International Conference on Systems, Signals and Image Processing

Date of Conference:

25-28 June 2008