Performance Analysis of FSO Communication Link using Diversity Techniques under Atmospheric Turbulence

The modern day internet technology demands for high data rate and large capacity. FSO communication is the technology capable of handling very high data rate and higher capacity. FSO technology is capable of multiplexing voice, data and video in full duplex mode. The FSO technology requires a line of sight path between Tx and Rx in order to make possible transmission. FSO technology faces a lot of challenges due to atmospheric turbulence such as scintillation and beam spreading. The reliability and the quality of link is largely affected due to the presence of atmospheric turbulence. The turbulence presence largely affects the bit error rate of the FSO link. Literature shows multiple techniques to reduce atmospheric turbulence. Diversity based techniques capability to overcome the effect of BER degradation. Diversity helps to improve the reliability and quality factor of the FSO link. This paper choose a various diversity based technique for mitigating the atmospheric turbulence for having reliable and high quality transmission link in free space optical communication.