Performance Improvement of Free Space Optical Communication (FSO) using the Innovative Relay Selection and Optimal Power Allocation Technique

Abstract

Keeping in view the exponential growth in the telecommunication industry supported with large bandwidth technologies, the free space optical communication (FSO) seems a promising alternative solution. FSO transmits a modulated beam of light using line of sight propagation through the atmosphere for broadband communication. It is an emerging technology where we transfer signal wirelessly similar to optical fiber communication without using optical fiber. This paper exhibits the design of selecting relay and allocating power in optimized manner using the FSO communication approach. However, this technology suffers from various atmospheric effects. The proposed selective active relay protocol overcomes these effects by improving the performance of the link using compact data sharing through optical wireless channels. Here we use a scale free fitness network followed by water pouring Erbinium Doped Fiber Amplifier power allocation algorithm. We introduce African Buffalo Optimization algorithm to optimize the error and outage probability. Our proposed technique accomplished a different atmospheric effect of optical beam propagation at 1550nm. Eventually the Bit Error Rate and Q-factor under various weather conditions are analyzed. The central switching has been carried out in this work and proves much better than distributed switching as evident from the comparison made. The idea of the work is to mitigate the ill effects of atmospheric turbulence on the FSO channel using relay assistance. The numerical results depict that the proposed methodology is better tuned than the existing ones.