Elements of information theory
Elements of information theory
Distributed Detection and Data Fusion
Distributed Detection and Data Fusion
Fusion of decisions transmitted over Rayleigh fading channels in wireless sensor networks
IEEE Transactions on Signal Processing
Estimation Diversity and Energy Efficiency in Distributed Sensing
IEEE Transactions on Signal Processing
Decentralized detection in sensor networks
IEEE Transactions on Signal Processing
Optimal Power Allocation for Distributed Detection Over MIMO Channels in Wireless Sensor Networks
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Asymptotic results for decentralized detection in power constrained wireless sensor networks
IEEE Journal on Selected Areas in Communications
Power control strategy for distributed multiple-hypothesis detection
IEEE Transactions on Signal Processing
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The distributed detection problem over a binary target is considered with wireless sensors sending local decisions to a fusion center over slow-fading orthogonal multiple access channels, where the J-divergence between the distributions under different hypotheses is used as the performance criterion. Given the slow-fading channels between the sensors and the fusion center, two new concepts called detection outage and detection diversity are introduced to quantify the long-term system performance, where the detection outage probability is defined as the probability that the instantaneous J-divergence is smaller than a certain threshold. Based on the detection outage probability, detection diversity order is defined as the slope of the outage probability curve (versus system power consumption) when things are plotted in logarithm domain. It is shown that even with a simple uniform transmission strategy, full detection diversity can be achieved on the order of K with K the total number of sensors in the network. We further show that if the transmission power is optimized across sensors, an adaptive power gain can be achieved in addition to the full diversity gain.