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Laser & Optoelectronics Progress, Volume. 60, Issue 17, 1706001(2023)

Bit Error Rate Performance of Cooperative Free Space Optical Communication System with Hierarchical Modulation and Physical Layer Network Coding

Huaijun Qin1, Yang Cao2、*, Xiaofeng Peng1, and Zupeng Zhang1
Author Affiliations
  • 1School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
  • 2Periodical Agency of Chongqing University of Technology, Chongqing 400054, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (31)
    References (20)
    Cited By (2)
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    Figures & Tables(9)
    Relay network model with asymmetric channel conditions

    Fig. 1. Relay network model with asymmetric channel conditions

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    Constellation of 4/16-QAM hierarchical modulation. (a) Constellation of high priority data Sih; (b) constellation of low priority data Sil; (c) constellation of data to be sent Si

    Fig. 2. Constellation of 4/16-QAM hierarchical modulation. (a) Constellation of high priority data Sih; (b) constellation of low priority data Sil; (c) constellation of data to be sent Si

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    4/16-QAM modulated in-phase subflow

    Fig. 3. 4/16-QAM modulated in-phase subflow

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    BER performance under different constellation priority parameters

    Fig. 4. BER performance under different constellation priority parameters

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    BER performance under different channel asymmetric parameters

    Fig. 5. BER performance under different channel asymmetric parameters

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    Performance comparison of system BER under different atmospheric turbulence intensities and different constellation priority parameters

    Fig. 6. Performance comparison of system BER under different atmospheric turbulence intensities and different constellation priority parameters

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    Performance comparison of system BER under different atmospheric turbulence intensities and different channel asymmetric parameters

    Fig. 7. Performance comparison of system BER under different atmospheric turbulence intensities and different channel asymmetric parameters

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    Comparison of BER performance improvement of cooperative FSO communication system by this scheme

    Fig. 8. Comparison of BER performance improvement of cooperative FSO communication system by this scheme

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    • Table 1. Simulation parameter settings

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      Table 1. Simulation parameter settings

      Parameter typeValue
      Refractive index structure constant /（m-2/3）0.141×10-13， 0.282×10-13， 0.564×10-13
      Laser wavelength /m1.55×10-6

      Hierarchical modulation mode

      Network coding type

      4/16-QAM

      Physical layer network coding

      Communication distance of direct link /m5000
      Communication distance of relay link /m3535
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    Huaijun Qin, Yang Cao, Xiaofeng Peng, Zupeng Zhang. Bit Error Rate Performance of Cooperative Free Space Optical Communication System with Hierarchical Modulation and Physical Layer Network Coding[J]. Laser & Optoelectronics Progress, 2023, 60(17): 1706001

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Aug. 10, 2022

    Accepted: Sep. 13, 2022

    Published Online: Aug. 29, 2023

    The Author Email: Yang Cao (caoyang@cqut.edu.cn)

    DOI:10.3788/LOP222255

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology