Performance of QPSK Modulation for FSO Under Different Atmospheric Turbulence

  • Dimpal JanuEmail author
  • Vijay Janyani
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 546)


Free space optical (FSO) communication link provides high-speed data transmission rate within line of sight range for indoor as well as outdoor applications. FSO comes with high sensitivity for variation in weather condition as it reflects in the form of change of dielectric properties of medium. The uniqueness of the presented model in this paper is that it achieves 125 GBPS of data rate with QPSK modulation scheme and that too at 1550 nm of wavelength which is compatible with existing optical backbone network. In this paper, authors analyzed the performance of a FSO link with 0.6 km length and modulation scheme QPSK for different atmospheric conditions. Gamma–Gamma distribution model is employed to model the FSO channel link. Performance comparisons are recorded as bit error rate (BER) and signal to noise ratio (SNR) with help of simulation tool Optisystem13.


FSO QPSK Atmospheric turbulence Gamma–Gamma distribution model 


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Department of Electronics & CommunicationMalaviya National Institute of Technology JaipurJaipurIndia

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