Predictive Analysis Of Performance Parameters In Free Space Optical Communication With Fractional Fourier Transformed PPM Modulated Laser Beam.

Abstract

This research article proposes the analysis of systems parameters (Bit Error Ratio BER,Signal To Noise Ratio SNR and  Receiver Senstivity ) in Optical free space communication by using Fractional Fourier Transformed (FrFT) Pulsed Position Modulated Optical Laser beam. The above mentioned approached is designed on matlab and result of proposed technique about FSO parameters (BER, SNR and  Receiver Senstivity ) is compared with On-Off keying (ook) ,Binary Phase Shift Keying (BPFSK), Differentail Phase Shift keyying (DPSK) and simple Pulsed Position Modulated (PPM) optical beam for FSO communication based system.In this noval approach the incoming speech signal is passed  first through the FrFT model and denoised speech signal are extracted and then forwarded for PPM modulator after that smooth and high power laser beam is generated with no harmonics and provide better performance over system parameters as compared to above mentioned approaches in research articles[1-3].