Rate Allocation for Decentralized Detection in Wireless Sensor Networks
2015 (English)In: 16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, Stockholm, June 28 - July 1, 2015, IEEE conference proceedings, 2015, 341-345 p.Conference paper (Refereed)
We consider the problem of decentralized detection where peripheral nodes make noisy observations of a phenomenon and send quantized information about the phenomenon towards a fusion center over a sum-rate constrained multiple access channel. The fusion center then makes a decision about the state of the phenomenon based on the aggregate received data. Using the Chernoff information as a performance metric, Chamberland and Veeravalli previously studied the structure of optimal rate allocation strategies for this scenario under the assumption of an unlimited number of sensors. Our key contribution is to extend these result to the case where there is a constraint on the maximum number of active sensors. In particular, we find sufficient conditions under which the uniform rate allocation is an optimal strategy, and then numerically verify that these conditions are satisfied for some relevant sensor design rules under a Gaussian observation model.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2015. 341-345 p.
IdentifiersURN: urn:nbn:se:kth:diva-165257DOI: 10.1109/SPAWC.2015.7227056ISI: 000380547100069ScopusID: 2-s2.0-84953389066OAI: oai:DiVA.org:kth-165257DiVA: diva2:807633
IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), June 28 -July 1 2015, Stockholm, Sweden
QC 201509042015-04-242015-04-242016-09-05Bibliographically approved