Combined Effect of Atmospheric Turbulence and Pointing Error on QPSK in Free Space Optics

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2018 by IJETT Journal
Volume-59 Number-3
Year of Publication : 2018
Authors : Swadha Agarwal, Priyanka Bhardwaj
DOI :  10.14445/22315381/IJETT-V59P224


Swadha Agarwal, Priyanka Bhardwaj"Combined Effect of Atmospheric Turbulence and Pointing Error on QPSK in Free Space Optics", International Journal of Engineering Trends and Technology (IJETT), V59(3),135-139 May 2018. ISSN:2231-5381. published by seventh sense research group

Free Space Optical (FSO) communication has become an important area for research with its numerous advantages over conventional communication systems. But with the set of advantages, there are some limitations which need to be addressed. Atmospheric conditions prominently affect the performance of FSO system making them highly susceptible to degrading effects of atmospheric turbulence and pointing errors. In this research paper, simulation of Quadrature Phase Shift Keying (QPSK) modulated FSO signal is done for various turbulence conditions with and without pointing error to analyze the effect of turbulence on the transmitted signal. Parameters like Bit Error Rate (BER) and Signal to Noise Ratio (SNR) are considered for simulation.

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FSO, Pointing Error, Atmospheric turbulence, Quadrature Phase Shift Keying (QPSK)