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Adaptive MIMO-FSO space diversity MRC reception characteristics over Malaga turbulence channel with pointing errors

Author

Listed:
  • Dan Chen

    (Xi’an University of Technology)

  • Feier Ai

    (Xi’an University of Technology)

  • Chenhao Wang

    (Shaanxi Vocational and Technical College)

  • Peiyan Zhao

    (Xi’an University of Technology)

  • Mengmeng Lu

    (Xi’an University of Technology)

Abstract

Atmospheric turbulence channels experience quasi-static fading, which makes it relatively straightforward to utilize feedback information for link adaptive transmission. Applying adaptive modulation to MIMO systems can effectively mitigate the degradation of Free-Space Optical (FSO) signals under adverse turbulence conditions. In this paper, the joint influence of pointing error and Malaga distribution turbulence fading on the probability density function (PDF) of the received light intensity of a MIMO channel employing maximal ratio combining (MRC) is considered. The PDF of MRC combined channel is derived based on the moment generation function. Then, using the cumulative density function (CDF)-based method, we analyze the asymptotic spectral efficiency (SE) and average bit error rate (BER) performance of the adaptive MPSK-MIMO system under different turbulence intensities, beam waist radius, jitter standard deviation, and the number of transmit/receive apertures. In addition, we also compare the average BER performance of adaptive and non-adaptive MIMO systems with MRC receivers. Monte Carlo simulation further verifies our analysis. The derived results help quantify the diversity order of the systems we are considering.

Suggested Citation

  • Dan Chen & Feier Ai & Chenhao Wang & Peiyan Zhao & Mengmeng Lu, 2024. "Adaptive MIMO-FSO space diversity MRC reception characteristics over Malaga turbulence channel with pointing errors," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 86(1), pages 117-126, May.
    • Handle: RePEc:spr:telsys:v:86:y:2024:i:1:d:10.1007_s11235-024-01114-9
    DOI: 10.1007/s11235-024-01114-9
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