RT Conference Proceedings T1 On the Utility of the Inverse Gamma Distribution in Modeling Composite Fading Channels A1 Ramírez Espinosa, Pablo A1 López-Martínez, Francisco Javier K1 Comunicaciones inalámbricas AB 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. YR 2020 FD 2020-01-20 LK https://hdl.handle.net/10630/19194 UL https://hdl.handle.net/10630/19194 LA eng NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026