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JSAC
2007

Cooperative routing for distributed detection in large sensor networks

8 years 11 months ago
Cooperative routing for distributed detection in large sensor networks
— In this paper, the detection of a correlated Gaussian field using a large multi-hop sensor network is investigated. A cooperative routing strategy is proposed by introducing a new link metric that characterizes the detection error exponent. Derived from the Chernoff information and Schweppe’s likelihood recursion, this link metric captures the contribution of a given link to the decay rate of error probability and has the form of the capacity of a Gaussian channel with the sender transmitting the innovation of its measurement. For one-dimensional GaussMarkov fields, the link metric can be represented explicitly as a function of the link length. Cooperative routing is achieved using the Kalman data aggregation and shortest path routing. Numerical simulations show that cooperative routing can be significantly more energy efficient than noncooperative routing for the same detection performance.
Youngchul Sung, Saswat Misra, Lang Tong, Anthony E
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2007
Where JSAC
Authors Youngchul Sung, Saswat Misra, Lang Tong, Anthony Ephremides
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