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Spatial diversity-based FSO links under adverse weather conditions: performance analysis

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Abstract

This study demonstrates a significant reduction in the bit error rate (BER) within free space optical (FSO) communication systems, even in highly turbulent optical channels. The strategic application of spatial diversity techniques emphasizes the feasibility of achieving low BER values. In the presence of light fog, our system achieves a transmission range of 700 m, while medium and heavy fog conditions reduce it to 450 and 350 m, respectively. Under light dust conditions, the range extends to 350 m and decreases to 120 and 48 m in medium and heavy dust conditions. In a clear sky, our non-return-to-zero orbital angular momentum (OAM) multiplexing-based FSO system successfully transmits 40 Gb/s of data over a distance of 1500 m with reliable performance. The utilization of spatial diversity and beamforming techniques further enhances system reliability, making it robust even in challenging real-world scenarios. However, it is essential to address the impact of adverse weather conditions, such as fog and dust, by developing weather-resistant technologies for reliable FSO communication. While fog generally exhibits better performance, the significance of spatial diversity remains crucial in adverse conditions, encompassing both fog and dust weather factors. The integration of OAM beams and FSO technology holds promise for high-speed and efficient optical communication. This research addresses the mitigation of weather-induced fading through OAM multiplexing.

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Authors and Affiliations

  1. Electrical and Computer Engineering Department, Baskin School of Engineering, University of California, Santa Cruz, USA

    Abdelrahman Elfikky

  2. Department of Electronics and Communication Engineering, University Institute of Engineering, Chandigarh University, Mohali, Punjab, India

    Mehtab Singh

  3. Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt

    Ayman I. Boghdady

  4. Alexandria Higher Institute of Engineering and Technology, Alexandria, Egypt

    Somia A. Abd El-Mottaleb

  5. College of Information Science and Technology, Eastern Institute for Advanced Study, Ningbo, Zhejiang, China

    Syed Agha Hassnain Mohsan

  6. Arab Academy for Science, Technology and Marine Transport, P.O. Box 1029, Alexandria, Egypt

    Moustafa H. Aly

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  1. Abdelrahman Elfikky
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AE, MS, AIB, SAA, SAH, and MHA have directly participated in the planning, execution, and analysis of this study. All authors have read and approved the final version of the manuscript.

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Correspondence to Moustafa H. Aly.

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Elfikky, A., Singh, M., Boghdady, A.I. et al. Spatial diversity-based FSO links under adverse weather conditions: performance analysis. Opt Quant Electron 56, 826 (2024). https://doi.org/10.1007/s11082-024-06625-y

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