Document Type

Article

Date

1-2-2012

Keywords

Electrical and Computer Engineering

Disciplines

Electrical and Computer Engineering

Description/Abstract

This paper considers the noise-enhanced distributed detection problem in the presence of Byzantine (malicious) nodes by suitably adding stochastic resonance (SR) noise. We consider two metrics - the minimum number of Byzantines (alpha_blind) needed to blind the fusion center as a security metric and the Kullback- Leibler divergence (DKL) as a detection performance metric. We show that alpha_blind increases when SR noise is added at the honest nodes. When Byzantines also start adding SR noise to their observations, we see no gain in terms of alpha_blind . However, the detection performance of the network does improve with SR. We also consider a game theoretic formulation where this problem of distributed detection in the presence of Byzantines is modeled as a minimax game between the Byzantines and the inference network, and numerically find Nash equilibria. The case when SR noise is added to the signals received at the fusion center (FC) from the sensors is also considered. Our numerical results indicate that while there is no gain in terms of , the network-wide performance measured in terms of alpha_blind the deflection coefficient does improve in this case

Additional Information

First author and Syracuse University authors listed. For a complete list of authors, please see article.

This is an author-produced, peer-reviewed version of this article. The published version of this document can be found online in the Communication, Control, and Computing (Allerton), 2011 49th Annual Allerton Conference on (doi: 10.1109/Allerton.2011.6120307) published by IEEE.

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