This paper presents a new model for propagation‐loss prediction in indoor mobile communications. It uses the free‐space loss model added to an empiric function (based on the Padé approximant), and a term that describes the signal randomness (typical of the RF propagation). In order to validate this model, a measurement verification was accomplished for a typical five‐floor building of a university. The loss predicted by this model had a mean error of 4.78 dB and a standard deviation of 6.05 dB in relation to the measured data. The formulation of the model does not require accurate information about the environment used in the study, such as the permittivity of the construction materials, layout of the furniture, and so forth, but only needs to be adaptable to any indoor environment. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:255–261, 2006; Published Online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.21321

This paper presents a model for path loss prediction in indoor mobile communications. It uses the freespace loss model added to an empiric function (based on Padé approximant), and a term that describes the sign randomness. In order to validate this model, a measurement campaign was accomplished at a typical 5 floors building of a university. The loss predicted by this model had a mean error of 4.78 dB and standard deviation of 6.05 dB in relation to the measured data. The proposed model doesn't need accuracy information of the environment in study, besides being adaptable to any indoor environment.

Resumo -Este trabalho propõe um modelo de predição de perda de propagação em um ambiente indoor, através de uma campanha de medição em um prédio no centro de Belém-PA. O mesmo é baseado no modelo de perda no espaço livre, considerando o expoente de perda de percurso uma variável aleatória.Palavras-chaves -Perda de propagação, medição indoor, comunicações móveis, distribuição Weibull, variável aleatória.