在指数化韦布尔流通道上对等效多样性UWOC系统的性能分析,其非零远见指点误差为非零
概括
水下无线光通信 (UWOC) 系统的空间多样性通过减轻流和指向错误显著提高了性能. 同等收益结合 (EGC) 与空间多样性提供强大的比特错误率 (BER) 在复杂的色通道上的性能.
科学领域:
- 水下无线光通信 (UWOC) 是指水下无线光通信.
- 光学通信系统 光学通信系统
- 无线通信是一种无线通信.
背景情况:
- 由于流引起的色和指向错误 (PE),UWOC系统的性能下降.
- 空间多样性技术对于提高UWOC系统可靠性至关重要.
- 显数维布尔 (EW) 分布模型复杂的水下流道.
研究的目的:
- 为了评估空间多样性UWOC系统与等效组合 (EGC) 的比特错误率 (BER) 性能.
- 分析独立指数化韦布尔 (EW) 流通道和非零远见指点误差 (PE) 的影响.
- 为了获得EGC UWOC系统的平均BER的分析表达式.
主要方法:
- 使用基于帕塞瓦尔定理的方法来导出平均BER表达式.
- 使用条件错误概率的里叶变换和色通道系数的特征函数 (CHF).
- 采用高斯-切比舍夫方程并通过蒙特卡洛模拟验证的近似频域积分.
主要成果:
- 导出了非零偏远PEs的EW流的概率密度函数和CHF.
- 证明EGC的空间多样性与单输入单输出 (SISO) 系统相比,显著提高了系统对色和PE的稳定性.
- 在强烈的色条件下实现了显著的多样性增长 (例如,多样性顺序为8的37.1dB).
结论:
- 基于EGC的空间多样性在提高UWOC系统的性能方面非常有效.
- 由此产生的分析框架准确地预测了复杂的色通道上的BER性能.
- 该研究为设计强大的UWOC系统提供了宝贵的见解.
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