Adaptive modulation techniques for elimination of non-gaussian effects in free space optical communication

Free Space Optical (FSO) communication is a promising technique for quick, secure, and cost-effective data transport. The Non-Gaussian events such as atmospheric turbulence, aiming errors, and background noise significantly impair system performance in FSO Communication system. There are several standard adaptive schemes, such as Orthogonal Frequency Division Multiplexing (OFDM), Phase Shift Keying (PSK), and Quadrature Amplitude Modulation (QAM), against turbulence-induced fading is examined. The dynamic modulation adaptation, based on channel state prediction, improves spectral efficiency and signal integrity through theoretical modeling and simulations. This paper explores dynamic adaptive modulation techniques to mitigate these effects and ensure improved reliability and efficiency in FSO links. This adaptive algorithm introduced for better FSO deployments since they dramatically lower bit error rates (BER) and increase system capacity. The findings suggest that adaptive modulation techniques effectively reduce bit error rates (BER) and enhance system capacity, making them practical for real-world FSO deployments.