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Weighted aggregation scheme with lifetime-accuracy tradeoff in wireless sensor network

DSpace at IIT Bombay

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Title Weighted aggregation scheme with lifetime-accuracy tradeoff in wireless sensor network
 
Creator JAGYASI, BG
DEY, BK
MERCHANT, SN
DESAI, UB
 
Subject distributed detection
multiple sensors
 
Description We consider design of wireless sensor network for event detection application. An MMSE based q-bit weighted aggregation scheme (q-WAS) is proposed in which each node transmits q bits to its parent in every session. The observation of each sensor is assumed to be one bit. The simulation results sow that 1-WAS achieves better accuracy than a previously proposed one bit aggregation scheme while offering almost same lifetime. With increasing q, the accuracy of q-WAS approaches that of the infinite precision aggregation scheme. Moreover the lifetime for q-WAS is significantly higher than infinite precision aggregation scheme. For a 100 node sensor network, the simulation results show that 3-WAS achieves a near optimum accuracy. The lifetime of the q-WAS is approximately 1/q-th of the lifetime of the one bit aggregation schemes. Hence this class of aggregation schemes offers a trade-off between accuracy and lifetime.
 
Publisher IEEE
 
Date 2011-10-26T09:35:54Z
2011-12-15T09:12:11Z
2011-10-26T09:35:54Z
2011-12-15T09:12:11Z
2006
 
Type Proceedings Paper
 
Identifier Fourth International Conference on Intelligent Sensing and Information Processsing, Proceedings,31-36
978-1-4244-0611-1
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15970
http://hdl.handle.net/100/2520
 
Source 4th International Conference on Intelligent Sensing and Information Processing,Bangalore, INDIA,DEC 15-18, 2006
 
Language English