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oai:riuma.uma.es:10630/292952026-02-03T11:33:44Zcom_10630_2254col_10630_37953

Composite Fading Models Based on Inverse Gamma Shadowing: Theory and Validation. Ramírez Espinosa, Pablo López-Martínez, Francisco Javier Sistemas de comunicaciones inalámbricos - Modelos matemáticos Shadowing Mathematical model Analytical models Wireless communications Rayleigh channels Gamma distribution Política de acceso abierto tomada de: https://v2.sherpa.ac.uk/id/publication/3585 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 distribution 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 wellknown state-of-the-art distributions. Also, exact and asymptotic expressions for the outage probability are provided, which are valid for any choice of baseline fading distribution. Finally, we exemplify our approach by presenting several application examples for IG-based composite fading models, for which their statistical characterization is directly obtained in a simple form. 2024-01-26T11:24:30Z 2024-01-26T11:24:30Z 2021-03-17 journal article AM P. Ramírez-Espinosa and F. J. López-Martínez, "Composite Fading Models Based on Inverse Gamma Shadowing: Theory and Validation," in IEEE Transactions on Wireless Communications, vol. 20, no. 8, pp. 5034-5045, Aug. 2021 https://hdl.handle.net/10630/29295 10.1109/TWC.2021.3065141 eng open access application/pdf IEEE