Comments on "On the optimality of the likelihood-ratio test for local sensor decision rules in the presence of nonideal channels"

Author

Kashyap, Akshay

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois, Urbana, IL

Volume

52

Issue

3

fYear

2006

fDate

3/1/2006 12:00:00 AM

Firstpage

1274

Lastpage

1275

Abstract

In a decentralized detection problem where N sensors make observations (the laws of which depend on the realized hypothesis) and communicate one of a finite and prespecified set of messages to a fusion center, optimal sensor decision rules have polyhedral decision regions in the space of likelihood vectors for a large class of Bayesian costs. We point out in this comment that this result can be easily derived from earlier results, even in the case when the communication from the sensors to the fusion center is over (parallel, independent) noisy channels

Keywords

Bayes methods; decision theory; sensor fusion; signal detection; wireless channels; wireless sensor networks; Bayesian cost; decentralized detection problem; fusion center; local sensor decision rule; nonideal channel; optimal likelihood-ratio test; polyhedral decision region; wireless sensor network; Bayesian methods; Context; Cost function; Random variables; Sensor fusion; Testing; Wireless sensor networks; Distributed detection; wireless sensor networks;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2005.864447

Filename

1603795