基于FRS/OCDMA代码对不同类型的杰洛夫水域进行的UOWC系统的性能评估
Applied optics
|January 31, 2024
概括
本研究探讨了水下光学无线通信 (UOWC) 系统的固定右转 (FRS) 代码. 较高的数据速率和水弱化降低了性能,但清的水域可以在35米以上的30 Gbps.
科学领域:
- 水下光学无线通信 (UOWC) 是一种无线通信.
- 光学代码划分多重访问 (OCDMA)
背景情况:
- 水下光学无线通信由于水的和衰减而面临挑战.
- 在UOWC系统中,OCDMA技术为增加带宽和管理多个用户提供了潜在的解决方案.
研究的目的:
- 在OCDMA框架内使用固定右转 (FRS) 代码调查UOWC系统的性能.
- 分析不同数据速率和不同Jerlov水类对系统性能指标的影响.
主要方法:
- 模拟UOWC系统使用532nm激光二极管和基于FRS的OCDMA.
- 评估了五种具有不同叶绿素度的杰洛夫水类.
- 基于每通道2.5,5和10 Gbps的数据速率的水下范围,比特错误率 (BER),眼睛图和质量因子 (Q-因子) 的性能评估.
主要成果:
- 增加数据速率 (2.5到10 Gbps) 和水衰减导致眼睛图形开口减少,BER更高,Q因子更低.
- 杰洛夫I型水允许10Gbps频道达到35m,日志 (BER) ≤-6.33和Q-因子>4.9.
- 杰洛夫II型和III型在相同的性能条件下显示显著更短的范围 (分别为12米和5.15米).
- 一个三通道系统实现了30 Gbps的总容量.
结论:
- 对于UOWC来说,FRS-OCDMA技术是可行的,但性能对数据速率和水条件敏感.
- 更清的水域 (Jerlov I型) 支持更高的数据速率和更长的传输距离.
- 通过使用多个通道,可以显著提高系统容量,证明了高速水下数据传输的潜力.
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