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Performance Analysis of a General Tree Structure for Target Detection in Wireless Sensor Networks

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3 Author(s)
Varaee, H. ; Electr. & Comput. Dept., Yazd Univ., Yazd, Iran ; Mirjalily, G. ; Tadaion, A.A.

One of the basic tasks of a wireless sensor network is target detection, and one of the main issues must be addressed in a detection sensor network is its active topology. Here, we assume a simple hierarchical topology, where sensors that are close to each other will form a cluster and each cluster has its own cluster head, which serves as the local fusion center. Based on decisions received from sensors located within a specific cluster, the corresponding cluster head will make a decision about target presence/absence within that sub-region. The decisions from cluster heads will be further transmitted to the central fusion node to inform it if there is a target or event in specific sub-regions. In this paper, we propose a general tree structure to fuse decisions within a cluster. The aim is to investigate the effects of using different tree topologies in a cluster on the detection performance and energy consumption in a detection sensor network. We will find a tradeoff between high performance and low energy consumption. For this purpose, a function named energy-error has been defined. By finding the minimum value of this function, it is possible to achieve a tradeoff between performance and energy consumption.

Published in:

Future Computer and Communication, 2009. ICFCC 2009. International Conference on

Date of Conference:

3-5 April 2009