On event signal reconstruction in wireless sensor networks

Authors:
Bariş Atakan;Özgür B. Akan
Affiliations:
Next Generation Wireless Communications Laboratory, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, Turkey;Next Generation Wireless Communications Laboratory, Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara, Turkey
Venue:
NETWORKING'07 Proceedings of the 6th international IFIP-TC6 conference on Ad Hoc and sensor networks, wireless networks, next generation internet
Year:
2007

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Abstract

In Wireless Sensor Networks (WSN), the effective detection and reconstruction of the event signal is mainly based on the regulation of sampling and communication parameters used by the sensor nodes. The aim of this paper is to understand the effect of these parameters on the reconstruction performance of event signal in WSN. Theoretical analysis and results show that with proper selection of sampling and communication parameters, the event signal can be satisfactorily reconstructed at the sink. Furthermore, this study also reveals that the non-uniform and irregular sampling of the event signal outperform the uniform sampling in terms of the reconstruction performance while providing significant energy conservation. Moreover, it is also shown that node density is closely related with the quality.