对OSSK-UWOC系统的性能分析,考虑指点错误和通道估计错误
Optics express
|February 1, 2024
概括
这项研究通过优化激光/探测器分配和光束腰部来增强使用光学空间转移键 (OSSK) 的水下无线光通信 (UWOC). 频道估计错误令人惊地提高了比特错误率 (BER) 的性能.
科学领域:
- 水下无线光学通信 (UWOC)
- 光学通信系统 光学通信系统
- 无线通信无线通信
背景情况:
- 水下无线光通信 (UWOC) 系统面临着流色的频道,指向错误和频道估计错误的挑战.
- 光学空间转移键 (OSSK) 是一种在UWOC系统中使用的调制技术.
- 马-马分布是流色通道的模型.
研究的目的:
- 为了分析UWOC系统的比特错误率 (BER) 性能,使用OSSK在马-马流色通道下进行分析.
- 调查指点错误和通道估计错误对OSSK-UWOC系统性能的影响.
- 考虑错误因子来导出概率密度函数 (PDF) 的新表达式.
主要方法:
- 开发新的PDF表达式,用于带有误差因子的玛-玛分布.
- 在OSSK系统中分析衰减系数的统计特征.
- 对平均BER性能进行分析评估.
主要成果:
- 激光和探测器的最佳分配可以提高光谱效率 (SE) 和BER性能.
- 窄梁腰部可以提高OSSK-UWOC系统的性能.
- 较高的频道估计误差 (例如, ρ=0.7) 与较低的误差 (ρ=0.95) 相比,提供了显著的信号噪声比 (SNR) 增益 (45 dB).
结论:
- 这些发现为设计强大高效的OSSK-UWOC系统提供了宝贵的见解.
- 战略系统参数分配和了解道估计错误的作用对于性能优化至关重要.
- 该研究强调了UWOC中OSSK在改善水下数据传输方面的潜力.
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