Distribuição generalizadas de desvanecimento de curto prazo : medições de campo e validações / Generalized short term fading distributions : field measurements and validations

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This thesis provides a thorough comparison among the various short term fading distributions, which are handled so as to give their best fit over data obtained from field measurements. Such distributions include those already well known in the literature - namely Rayleigh, Rice, Nakagami, Hoyt e Weibull - as well as two recently proposed models, namely k-µ and h-µ. Firstly, some theoretical background concerning these distributions are given. Then, the details of the construction and required parameters adjustments of the measurement apparatus as well as the data collection procedures are shown. Then, the various results of the measurements are analysed. The analyses are based on an ample sample space, encompassing 300 surveying sites. In the view of such a vast measurement campaign, it may be possible to recommend the adequate use of those newly proposed distributions, namely k-µ e h-µ. From our results, it is possible to see that a significant improvement in the curve fitting process can be seen with the use of these distributions, which may be useful for the adequate modelling of the wireless communications propagation environement

ASSUNTO(S)

probability distributions fading analise de regressão distribuição (probabilidades) sistemas de telecomunicação telecommunication systems radio - transmissores e transmissão - desvanecimento weibull probabilidade de tempo

ACESSO AO ARTIGO

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