NDLI: Distributed Detection Performance Under Dependent Observations and Nonideal Channels

Content Provider	IEEE Xplore Digital Library
Author	Ying Lin Hao Chen
Copyright Year	2001
Abstract	In this paper, we explore the impact of wireless channel capacity on asymptotic detection performance for distributed detection in wireless sensor networks (WSNs). As a key performance metric for large-scale WSNs, the asymptotic detection performance is characterized by the error exponents of detection error probabilities. In particular, we consider error exponents under dependent observations and nonideal channels. We derive a sufficient condition under which the detection system will result in zero error exponents under both orthogonal channels and multiple-access channels. We show that if the channel capacity is zero, the corresponding error exponents become zero as well. In addition, a special case of dependent observations where sensor measurements are independently identically distributed given a hidden variable or vector is studied. Under this model, we further derive the necessary and sufficient condition for having zero error exponents. Numerical examples are also presented to validate the results and demonstrate the relationship among the asymptotic detection performance and system parameters.
Sponsorship	IEEE Sensors Council
Starting Page	715
Ending Page	722
Page Count	8
File Size	871455
File Format	PDF
ISSN	1530437X
Volume Number	15
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Bayes methods Channel capacity Sensor fusion Sensor phenomena and characterization Error probability non-ideal channel sensor decision and fusion dependent observations error-exponent
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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