Adaptive Beam Divergence Control to Mitigate Scintillation Effect Caused by Pointing Error in Vertical FSO...

Area of Science:

• Optical communication systems
• Wireless communication technologies
• Atmospheric optics

Background:

• Free-space optical (FSO) communication is crucial for next-generation networks.
• Maintaining transceiver alignment and mitigating atmospheric turbulence are key challenges in FSO systems.
• Vertical FSO links are particularly susceptible to scintillation losses due to atmospheric turbulence.

Purpose of the Study:

• To analyze the relationship between pointing error and scintillation in FSO systems.
• To propose an adaptive beam divergence technique for mitigating scintillation.
• To enhance signal-to-noise ratio (SNR) in vertical FSO links.

Main Methods:

• Analysis of pointing error and scintillation concerning beam divergence angle.
• Development and simulation of an adaptive beam that optimizes divergence angle based on pointing error.
• Comparison of the proposed adaptive beam technique with adaptive beamwidth methods.

Main Results:

• The proposed adaptive beam technique effectively mitigates scintillation effects caused by pointing errors.
• Simulations demonstrated an enhanced signal-to-noise ratio (SNR) using the adaptive beam approach.
• The adaptive beam optimization successfully minimized scintillation in simulated vertical FSO links.

Conclusions:

• The adaptive beam technique offers a viable solution for minimizing scintillation in vertical FSO links.
• Optimizing beam divergence angle is critical for robust FSO communication.
• This approach enhances the reliability and performance of FSO communication systems.