Modulace pro bezvláknovou optickou síť

Abstract

This thesis is about modulations which are used for FSO system. In the chapters are described OFDM and QAM modulations which are the most used in FSO system. The main task is to simulate two modulations in OptiSystem program. As a transmission medium is used atmosphere because it is talked about free space optics. For the simulation of atmosphere was used FSO component and in FSO component were simulated attenuations which correspond to different density of fog.