| Authors: | |
| Pablo Ramirez-Espinosa | |
| F. Javier Lopez-Martinez |
One Sentence Summary:
introduce a general approach to characterize composite fading models
Abstract:
-We introduce a general approach to characterize composite fading models based on inverse gamma (IG) shadowing. We first determine to what extent the IG distribution is an adequate choice for modeling shadow fading, by means of a comprehensive test with field measurements and other distributions conventionally used for this purpose. Then, we prove that the probability density function and cumulative density function of any IG-based composite fading model are directly expressed in terms of a Laplace-domain statistic of the underlying fast fading model, and in some relevant cases, as a mixture of well-known state-of-the-art distributions. We exemplify our approach by presenting a composite IG/two-wave with diffuse power fading model, for which its statistical characterization is directly obtained in a simple form. Index Terms-Shadowing, fading, inverse gamma distribution, composite fading models.