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<p>This study investigates the performance of underwater optical wireless communication (UWOWC) system through spatial diversity techniques, evaluated under various scintillation-based channel models. The objective is to improve the effective transmission range while maintaining the performances. The key performance metrics such as eye opening, quality factor (Q-factor), and bit error rate (BER) were analyzed across different ocean water types—clear, coastal, and turbid. The transmission range, in the case of a single input single output (SISO) system under the gamma-gamma model is not appreciable. Therefore, to improve the performance of the system, a 4 × 4 multiple input multiple output (MIMO) UWOWC configuration was introduced that achieves a 10 Gbps data rate over a maximum distance of 1050&#xa0;m in clear water, 575&#xa0;m in coastal water, and 430&#xa0;m in turbid water, which demonstrates its effectiveness in challenging underwater environments, this is better when compared to the results available in the literature.</p>

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Performance analysis of underwater optical wireless communication in different ocean water types using spatial diversity

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • Faizan Shafi,
  • Awanish Kumar,
  • Rangaswamy Nakkeeran,
  • M. Thachayani

摘要

This study investigates the performance of underwater optical wireless communication (UWOWC) system through spatial diversity techniques, evaluated under various scintillation-based channel models. The objective is to improve the effective transmission range while maintaining the performances. The key performance metrics such as eye opening, quality factor (Q-factor), and bit error rate (BER) were analyzed across different ocean water types—clear, coastal, and turbid. The transmission range, in the case of a single input single output (SISO) system under the gamma-gamma model is not appreciable. Therefore, to improve the performance of the system, a 4 × 4 multiple input multiple output (MIMO) UWOWC configuration was introduced that achieves a 10 Gbps data rate over a maximum distance of 1050 m in clear water, 575 m in coastal water, and 430 m in turbid water, which demonstrates its effectiveness in challenging underwater environments, this is better when compared to the results available in the literature.