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

Yatian Li; Tianwen Geng; Shuang Ma; Shijie Gao; Huibin Gao

doi:10.1117/1.OE.56.3.036116

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

Yatian Li, Tianwen Geng, Shuang Ma, Shijie Gao, Huibin Gao

Author Affiliations +

Optical Engineering, Vol. 56, Issue 3, 036116 (March 2017). https://doi.org/10.1117/1.OE.56.3.036116

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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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," Optical Engineering 56(3), 036116 (28 March 2017). https://doi.org/10.1117/1.OE.56.3.036116

Received: 23 November 2016; Accepted: 13 March 2017; Published: 28 March 2017

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