Multipath fading in wireless sensor networks: measurements and interpretation

Authors:
Daniele Puccinelli;Martin Haenggi
Affiliations:
University of Notre Dame, Notre Dame, IN;University of Notre Dame, Notre Dame, IN
Venue:
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Year:
2006

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Abstract

Multipath fading heavily contributes to the unreliability of wireless links, causing fairly large deviations from link quality predictions based on path loss models; its impact on wireless sensor networks is considerable. Although analytical models provide a probabilistic description, multipath fading is a deterministic phenomenon. Moreover, in the case of static nodes, fading is time-invariant. We illustrate its spatial nature with experimental evidence obtained using lower-end sensing node hardware. We also show the limitations of the supposed immunity of wideband radios to multipath fading in indoor deployments.