概括
本研究介绍了用于水下无线光通信 (UWOC) 的反时 (TR) 波形,以对抗不可靠的通道. TR波形显著降低了符号间干扰 (ISI),提高了UWOC系统中的数据传输可靠性.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 水下无线光通信 (UWOC) 面临着分散,吸收和流等挑战,阻碍了可靠的数据传输.
- 由于分散光子的多路效应引起的UWOC通道的分散性,导致符号间干扰 (ISI).
研究的目的:
- 为UWOC系统提出和评估时间逆转 (TR) 波形设计技术.
- 为了减轻符号间干扰 (ISI) 和提高水下光通信的可靠性.
主要方法:
- 导出UWOC通道模型,考虑强度调制和直接检测系统的指数偏差和随机散射效应.
- 分析和模拟在UWOC频道中提出的时间逆转 (TR) 波形的性能.
- 在非负的UWOC频道中研究影响TR波形设计的"挤压效应".
主要成果:
- 时间逆转 (TR) 波形非常适合UWOC系统,创建一个对称的等效通道,简化了等分.
- 确定了"挤压效应",需要应用等分器以获得最佳的TR波形性能.
- 与没有TR波形的系统相比,使用TR波形导致比特错误率明显提高.
结论:
- 时间逆转 (TR) 波形设计是一种有效的技术,用于减少水下无线光通信 (UWOC) 的符号间干扰 (ISI).
- 鉴定到的"挤压效应"凸显了在使用TR波形的UWOC系统中均等化的重要性.
- TR波形的实施大大提高了数据传输的可靠性,并降低了在具有挑战性的水下环境中的比特错误率.
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