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Performance analysis of QPSK in free-space optical communications systems over combined channel with phase compensation error

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Abstract

Performance of free-space optical (FSO) links employed quadrature phase shift keying (QPSK) modulation with phase compensation error over Combined Channel is investigated in this paper. By considering the key factors of weather condition, pointing errors and phase noise, the closed-form expressions of symbol error rate (SER) are derived by employing the hyper-geometric functions substitution method. Numerical results show that for FSO system in Combined Channel, SER must be the trade off between pointing errors and weather condition, but it suffers more from the weather condition. The effects of pointing errors on system performance are also studied.

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Authors and Affiliations

  1. Network Technology Research Institute, China United Network Communications Corporation Limited, Beijing, 100048, China

    Junyu Shang, Zuoyong Nan, Siqi Liu, Chen Qiu & Xuemei Xin

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  1. Junyu Shang
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  2. Zuoyong Nan
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  3. Siqi Liu
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  4. Chen Qiu
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  5. Xuemei Xin
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Correspondence to Junyu Shang.

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Shang, J., Nan, Z., Liu, S. et al. Performance analysis of QPSK in free-space optical communications systems over combined channel with phase compensation error. Opt Quant Electron 47, 2555–2563 (2015). https://doi.org/10.1007/s11082-015-0137-y

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  • DOI: https://doi.org/10.1007/s11082-015-0137-y

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