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oai:riuma.uma.es:10630/191942026-02-03T12:22:57Zcom_10630_2254col_10630_37959

00925njm 22002777a 4500 dc Ramírez Espinosa, Pablo author López-Martínez, Francisco Javier author 2020-01-20 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 attained in a simple form. https://hdl.handle.net/10630/19194 Comunicaciones inalámbricas On the Utility of the Inverse Gamma Distribution in Modeling Composite Fading Channels