The performance of macrodiversity system in the presence of long-term Nakagami-m fading and short-term gamma fading

Authors:
Časlav Stefanovic;Dragana Krstic;Ana Pešic;Dejan Petkovic
Affiliations:
Faculty of Electronic Engineering, University of Niš, Serbia;Faculty of Electronic Engineering, University of Niš, Serbia;Faculty of Electronic Engineering, University of Niš, Serbia;Faculty of Occupational Safety, University of Niš, Serbia
Venue:
ICCOM Proceedings of the 13th WSEAS international conference on Communications
Year:
2009

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Abstract

Probability density function (PDF), moments of signal and amount of fading (AF) at the output of macrodiversity system in closed form are obtained. Dual maximal-ratio combining (MRC) is implemented at the micro level (single base station) and selection combining (SC) with two base stations (dual diversity) is implemented at the macro level. This model assumes a Nakagami-m density function for the envelope of the received signal and a gamma distribution to model the average power to account for the shadowing. The results are shown graphically for different signal and fading parameters values.