Abstract
In this paper the performance of a free space optical (FSO) communication system is analyzed by considering heavy atmospheric losses such as scattering, absorption, channel fading and misalignment fading. For the analysis, subcarrier intensity modulated free space optical (SIM-FSO) communication system using binary phase shift keying (BPSK) is employed. The bit error rate (BER), channel capacity and outage probability of the radiated signal are then investigated over a K-distributed mutual slow fading turbulence channel with illustrative 2D and 3D plots. Novel closed-form analytical expressions are derived for the combined strong turbulent channel model, average BER, channel capacity and outage probability for the considered communication system.
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