Abstract
Most dominant and viable advanced technology for broadband wireless applications is free space communication (FSO) that provides unlicensed spectrum, very high data rate and has no electromagnetic interference. Atmospheric turbulences has great effect on FSO link and quality of light beam gets Detroit while propagating to long distance through the atmosphere. The signal exhibits a random fluctuation in the existence of atmospheric turbulence which degrades functioning of system. Bit Error Rate (BER), Outage Probability (OP) and Quality Factor are most important factors that decide quality of transmission of any data. Free space optical communication concept is introduced in this paper along with its issues, challenges and heuristic solutions. The findings in the paper demonstrate deployment of different methods for enhancing the system performance. It is seen that by using heuristic solutions such as FSO-WDM, hybrid RF/FSO better results with respect to BER can be obtained in comparison to simple FSO for high speed wireless communication.
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