L -ary pulse position modulation free-space optical link in atmospheric turbulent channels with pointing errors" />
28 March 2017 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
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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 ( Γ Γ ) 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.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yatian Li, Yatian Li, Tianwen Geng, Tianwen Geng, Shuang Ma, Shuang Ma, Shijie Gao, Shijie Gao, Huibin Gao, 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," Optical Engineering 56(3), 036116 (28 March 2017). https://doi.org/10.1117/1.OE.56.3.036116 . Submission: Received: 23 November 2016; Accepted: 13 March 2017
Received: 23 November 2016; Accepted: 13 March 2017; Published: 28 March 2017
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