POINTING ERROR EFFECTS ON PERFORMANCE OF AMPLIFY-AND-FORWARD RELAYING FSO SYSTEMS USING SC-QAM SIGNALS OVER GAMMA-GAMMA ATMOSPHERIC TURBULENCE CHANNELS

Abstract: 81 | PDF: 41

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Author

  • Duong Huu Ai*, Do Trong Tuan, Ha Duyen Trung

Keywords:

AF
atmospheric turbulence
ASER
FSO
QAM
pointing error

Abstract

This paper presents the theoretical analysis of the average symbol error rate (ASER) of free space optical (FSO) communication system combined with multiple-input multiple-output (MIMO) relay based on Amplify-and-Forward (AF) technique employing sub-carrier quadrature amplitude modulation (SC-QAM) signal over strong atmospheric turbulence, which is modeled by Gamma-Gamma distributions and pointing error. The pointing error effect is studied by taking into account the influence of beam width, aperture size and variance on the ASER. The influence of the number of relay stations, link distance and different MIMO/FSO configurations on the system’s ASER are also discussed in this paper. The numerical results present the impact of pointing error on the performance of systems and how we use proper values of beam width and aperture to improve the performance of such systems.

References

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Published

Jun 30, 2016
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How to Cite
Duong Huu Ai*, Do Trong Tuan, Ha Duyen Trung. “POINTING ERROR EFFECTS ON PERFORMANCE OF AMPLIFY-AND-FORWARD RELAYING FSO SYSTEMS USING SC-QAM SIGNALS OVER GAMMA-GAMMA ATMOSPHERIC TURBULENCE CHANNELS”. The University of Danang - Journal of Science and Technology, vol. 6, no. 103, June 2016, pp. 1-5, https://jst-ud.vn/jst-ud/article/view/881.

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