BER and SNR performance analysis of 2-ASK & 4-ASK modulated truncated bessel beams on different receiver apertures in FSO communications links

In this thesis, varying turbulent atmosphere environment are simulated random phase screen method. 2-ASK & 4-ASK modulated truncated Bessel beam are generated and propagated through turbulent atmosphere utilizing random phase screens. In MATLAB environment error counting method is applied then simulation results are obtained corresponding to BER and SNR. On the other hand, the contributions of enlargement receiver aperture on BER is examined. Also, to comprehend the free space optical (FSO) communication architecture in detail and to support the future experimental studies, FSO communication transmitter and receiver systems are designed.