Performance Evaluation and Optimization of UAV-Based Hybrid Dual-Hop FSO/UOWC Systems

IF 4 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Systems Journal Pub Date : 2024-03-20 DOI:10.1109/JSYST.2024.3399002

Jin-Yuan Wang;Pan Feng;Li-Hua Hong;Hao-Nan Yang;Na Liu

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引用次数: 0

Abstract

This article considers an unmanned aerial vehicle-based hybrid dual-hop free-space optical (FSO)/underwater optical wireless communication (UOWC) system with a decode-and-forward relay, where the FSO channel is influenced by atmospheric loss, turbulence, pointing error, and angle-of-arrival fluctuation, and the UOWC channel is affected by oceanic path loss, turbulence, and pointing error. Using direct detection and heterodyne detection, we obtain tractable analytical expressions of the outage probability (OP) and bit error rate (BER), respectively. We then derive asymptotic bounds of the OP and BER to reveal more insights into the effects of various parameters. As an extension, we also analyze the system performance over a more general channel model. After that, we consider a serial multirelay-based hybrid FSO/UOWC system, and jointly optimize the relay number and the relay distance vector to obtain a tradeoff between system cost and OP performance. Numerical results are provided to validate the accuracy of the derivations and the superiority of the proposed optimization scheme. We also discuss the influences of various parameters on system performance.

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基于无人机的混合双跳 FSO/UOWC 系统的性能评估和优化

本文研究了一种基于无人机的混合双跳自由空间光（FSO）/水下光无线通信（UOWC）系统，该系统采用解码前向中继，其中 FSO 信道受大气损耗、湍流、指向误差和到达角波动的影响，UOWC 信道受海洋路径损耗、湍流和指向误差的影响。通过直接检测和外差检测，我们分别得到了中断概率（OP）和误码率（BER）的可控分析表达式。然后，我们推导出 OP 和 BER 的渐近限值，以揭示各种参数的影响。作为扩展，我们还分析了更一般信道模型下的系统性能。之后，我们考虑了基于串行多中继的 FSO/UOWC 混合系统，并联合优化了中继数和中继距离向量，以在系统成本和 OP 性能之间取得平衡。我们提供了数值结果，以验证推导的准确性和所提优化方案的优越性。我们还讨论了各种参数对系统性能的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Systems Journal 工程技术-电信学

CiteScore

9.80

自引率

6.80%

发文量

572

审稿时长

4.9 months

期刊介绍： This publication provides a systems-level, focused forum for application-oriented manuscripts that address complex systems and system-of-systems of national and global significance. It intends to encourage and facilitate cooperation and interaction among IEEE Societies with systems-level and systems engineering interest, and to attract non-IEEE contributors and readers from around the globe. Our IEEE Systems Council job is to address issues in new ways that are not solvable in the domains of the existing IEEE or other societies or global organizations. These problems do not fit within traditional hierarchical boundaries. For example, disaster response such as that triggered by Hurricane Katrina, tsunamis, or current volcanic eruptions is not solvable by pure engineering solutions. We need to think about changing and enlarging the paradigm to include systems issues.