Lasers, Fiber Optics, and Communications

Timing jitter’s influence on the symbol error rate performance of the L-ary pulse position modulation free-space optical link in atmospheric turbulent channels with pointing errors

[+] Author Affiliations
Yatian Li

Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, China

University of Chinese Academy of Sciences, Beijing, China

Tianwen Geng, Shuang Ma, Shijie Gao, Huibin Gao

Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, China

Opt. Eng. 56(3), 036116 (Mar 28, 2017). doi:10.1117/1.OE.56.3.036116
History: Received November 23, 2016; Accepted March 13, 2017
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Abstract.  An analytical approach is proposed to evaluate the impact of timing jitter on the error performance of the L-ary pulse position modulation (L-PPM) free-space optical (FSO) link, under the gamma–gamma (ΓΓ) turbulence with pointing errors. The expression of the conditional symbol error rate (SER) for a certain timing jitter is developed while the Gaussian–Hermite polynomial approximation is utilized to derive the closed-form expression of the average SER by the jitter’s variance. It is discovered that the timing jitter contributes to an error floor on the SER in both Monte–Carlo simulations and the theoretical results. Also, the jitter with small variance could be tolerable. What is more, the PPM system with lower order is more sensitive to the timing jitter than the higher ones.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Yatian Li ; Tianwen Geng ; Shuang Ma ; Shijie Gao and Huibin Gao
"Timing jitter’s influence on the symbol error rate performance of the L-ary pulse position modulation free-space optical link in atmospheric turbulent channels with pointing errors", Opt. Eng. 56(3), 036116 (Mar 28, 2017). ; http://dx.doi.org/10.1117/1.OE.56.3.036116


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