title   
  

On the quality and timeliness of fusion in a random access sensor network

Soğanlı, Abdurrahim and Erçetin, Özgür and Çetin, Müjdat (2015) On the quality and timeliness of fusion in a random access sensor network. IEEE Signal Processing Letters, 22 (9). pp. 1259-1263. ISSN 1070-9908 (Print) 1558-2361 (Online)

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Official URL: http://dx.doi.org/10.1109/LSP.2015.2396573

Abstract

In this letter, we investigate the trade-off between the quality ofmulti-sensor fusion decision and the delay of making that decision in a random access sensor network in a particular setting where the correlation between two sensor observations decreases with the increasing distance between these sensors. We propose a system operation wherein the nodes located in a small neighborhood of a sensor node that has successfully transmitted its decision to the fusion center are deactivated to reduce the contention over the random access channel. We propose a utility function that involves the quality and timeliness of the decision and determine the optimal size of this neighborhood analytically under a Markovian system operation model and numerically by simulating the actual system operation. These experiments demonstrate how our model can be used to set this neighborhood size before data collection to achieve a desired trade-off between decision quality and timeliness.

Item Type:Article
Uncontrolled Keywords:Data fusion; decentralized detection; wireless sensor networks
Subjects:UNSPECIFIED
ID Code:26943
Deposited By:Abdurrahim Soğanlı
Deposited On:22 May 2015 15:52
Last Modified:22 May 2015 15:52

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