NDLI: Performance of free-space optical communications using SC-QAM signals over strong atmospheric turbulence and pointing errors

Content Provider	IEEE Xplore Digital Library
Author	Ha Duyen Trung Do Trong Tuan
Copyright Year	2014
Description	Author affiliation: Sch. of Electron. & Telecommun., Hanoi Univ. of Sci. & Technol., Hanoi, Vietnam (Ha Duyen Trung; Do Trong Tuan)
Abstract	We theoretically analyze the performance of free-space optical (FSO) communication systems using subcarrier intensity quadrature amplitude modulation (SC-QAM) signals over strong atmospheric turbulence channels together with pointing errors. We take into account atmospheric attenuation, atmospheric turbulence and pointing errors. In order to model atmospheric turbulence, we employ a gamma-gamma distribution for strong turbulent condition. Meanwhile, we study pointing errors by using a fading model where the influence of beam width, detector size and jitter variance is considered. In addition, we use a combination of these models to analyze the combined effect of atmospheric turbulence and pointing error to SC-QAM/FSO systems. Finally, we derive a closed-form expression for evaluating the average symbol error rate (ASER) performance of such systems. Numerically evaluated results present the impact of pointing errors on the performance of SC-QAM/FSO systems over strong atmospheric turbulence. Moreover, simulation results show that the closed-form expression can provide a precision for evaluating ASER performance of such systems.
Starting Page	42
Ending Page	47
File Size	1870729
Page Count	6
File Format	PDF
ISBN	9781479950492
e-ISBN	9781479950515
DOI	10.1109/CCE.2014.6916677
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-07-30
Publisher Place	Vietnam
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Limiting Modulation Educational institutions Laser beams Signal to noise ratio
Content Type	Text
Resource Type	Article

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