Towards Optic Enlightenment: Future Free Space Optics Architecture & Dynamic Modeling

Free space optics (FSO) is gradually being seen as a potential technique for supporting high-speed communication. Nonetheless, FSO meets challenges caused by the air medium through which the laser beam travels. This research overcomes these obstacles by utilizing spatial diversity tactics. In particular, a two-way relay (TWR) is used to build a two-way communication link between two remote places. The TWR extends the range of FSO gearbox and mitigates the effects of fading, which vary with distance. Extensive research is conducted on the many applications of TWR-supported FSO communication, and a mathematical methodology for analyzing performance indicators at the physical layer is introduced. Furthermore, various channel impediments such as route loss, pointing mistakes, and atmospheric turbulence are addressed in detail. To account for changing amounts of atmospheric turbulence, the use of log-normal, Gamma-Gamma, and M-distributions is done to replicate the fading effects caused by turbulence. There is an urgent need to broaden the application of TWR protocols into a multiuser scenario, especially in today's context when several pairs of users' demand data interchange among themselves. Thorough analysis on the use of a single TWR that serves many user-pairs via the implementation of a scheduleris explored.