Maximin Distributed Detection in the Presence of Impulsive Alpha-Stable Noise

The distributed detection problem in wireless sensor networks is studied under the impulsive alpha-stable noise assumption. Since symmetric alpha-stable density does not have a closed form, its approximation, the bi-parameter Cauchy Gaussian mixture model, is used to describe the impulsive behavior of alpha-stable noises. With this model, we propose a low-complexity robust fusion rule by taking the maximin setting with respect to the detection probability. An explicit formula for the detection probability is derived. Robustness of the proposed maximin fusion rule is justified by numerical and simulation results for alpha-stable noises.