FSO Channel Modelling and Performance Evaluation Over Dust Combined With G-G Atmospheric Turbulence

There has been an increase in interest in free-space optical (FSO) communication over the past decade. The usage of FSO is limited by the weather, despite the fact that it has a wide range of uses in both indoor and outdoor settings. Dust is considered a significant weather limitation that might cause the link to drop. Using real-time data from the Egyptian Meteorological Authority, we first investigate the statistical behavior of the dusty channel in this work before presenting a probability distribution function (PDF) for dust attenuation. Then, a closed formula is employed to express the composite channel state brought on by the suggested dust model and gamma-gamma (G-G) atmospheric turbulence. Moreover, we analyzed the average bit error rate (BER) and normalized capacity theoretically in terms of closed forms to assess the system performance. The results show that the system's performance is significantly impacted by the dust storm.