This paper presents and analyzes fading measurements of the optical signal in a terrestrial free space optical communication link using a commercial system. Unlike previous works, the link distance is very short (about 90 meters). Nevertheless, it was possible to observe significant variations in the scintillation index over the course of one day. This behavior agrees with previous results obtained in the literature for much longer links.

A terrestrial free space optical communication link using a commercial system was deployed across Faculty of Technology campus in Limeira. Channel measurements were collected in order to develop appropriate communication channel models. Unlike previous work, the link distance is very short (around 91 meters). Still, it was possible to observe significant scintillation index variations over a day. This behaviour agrees with previous results obtained in the literature for much longer links.

Este exemplar corresponde à versão final da tese defendida pelo aluno Maxwel Vitorino da Silva, e orientada pelo Prof.