Topology design to reduce energy consumption of distributed graph filtering in WSN
Chapter, Peer reviewed
Accepted version
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http://hdl.handle.net/11250/2492822Utgivelsesdato
2017Metadata
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Originalversjon
Paper presented at the 2017 IEEE Global Conference on Signal and Information Processing (GlobalSIP) 10.1109/GlobalSIP.2017.8309031Sammendrag
The large number of nodes forming current sensor networks has made essential to introduce distributed mechanisms in many traditional applications. In the emerging field of graph signal processing, the distributed mechanism of information potentials constitutes a distributed graph filtering process that can be used to solve many different problems. An important limitation of this algorithm is that it is inherently iterative, which implies that the nodes incur in a repeated communication cost along the exchange periods of the filtering process. Since sensor nodes are battery powered and radio communications are one of the most energy demanding operations, in this work, we propose to redesign the network topology in order to reduce the total energy consumption of the filtering process. An accurate energy model is proposed and extensive numerical results are presented to show the efficiency of our methodology according to this energy model.