SIGNAL-PROCESSING WITH FRACTIONAL LOWER ORDER MOMENTS - STABLE PROCESSES AND THEIR APPLICATIONS

Non-Gaussian statistical signal processing is important when signals and/or noise deviate from the ideal Gaussian model. Stable distributions are among the most important non-Gaussian models. They share defining characteristics with the Gaussian distribution, such as the stability property and central limit theorems, and. in fact include the Gaussian distribution as a limiting case. To help engineers better understand the stable models and develop methodologies for their applications in signal processing, this paper presents a tutorial review of the basic characteristics of stable distributions and stable signal processing. The emphasis will be on the differences and similarities between stable signal processing methods based on fractional lower order moments and Gaussian signal processing methods based on second-order moments.