DETERMINATION OF RF SOURCE POWER IN WPSN USING MODULATED BACKSCATTERING

A Wireless Sensor Network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions at different locations. During RF transmission energy consumed by critically energy-constrained sensor nodes in a W...

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Bibliographic Details
Published in:International journal on soft computing 2012-02, Vol.3 (1), p.47-47
Main Authors: Sreedhar, K, Sreenivasulu, Y
Format: Article
Language:English
Subjects:
Consumption
Energy consumption
Energy transmission
Networks
Radio frequencies
Sensors
Switching theory
Wireless communication
Online Access:Get full text
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Summary:A Wireless Sensor Network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions at different locations. During RF transmission energy consumed by critically energy-constrained sensor nodes in a WSN is related to the lifetime system, but the lifetime of the system is inversely proportional to the energy consumed by sensor nodes. In that regard, modulated backscattering (MB) is a promising design choice, in which sensor nodes send their data just by switching their antenna impedance and reflecting the incident signal coming from an RF source. Hence, Wireless Passive Sensor Networks (WPSN) designed to operate using MB do not have the lifetime constraints. In this, the authors are going to investigate the system analytically. To obtain interference-free communication connectivity with the WPSN nodes number of RF sources is determined and analyzed in terms of output power and the transmission frequency of RF sources, network size, RF source and WPSN node characteristics.
ISSN:2229-7103
2229-6735
DOI:10.5121/ijsc.2012.3104