ASK and PPM modulation based FSO system under varying weather conditions

The Free Space Optics (FSO) proves to be a very effective and efficient technology for wireless communication. This emerging field basically uses invisible beams of light such as ultraviolet, infrared, etc. in order to provide optical bandwidth connections providing a high data rate than other technologies. This work exclusively deals with the designing of FSO systems using the simulation software Opti-system 13.0 with Amplitude Shift Keying and Pulse Position Modulation techniques. Further their comparative study has been made as to which modulation technique provides better means of communication. The work extends to the performance analysis of FSO systems by varying different FSO parameters due to several conditions for different atmospheric turbulences including rain, fog, haze, etc. Finally the simulation results are obtained, analyzed and further discussed.