论文标题
水下无线光学通信的性能在级联混合物的礼物中的指数性伽马湍流
Performance of Underwater Wireless Optical Communications in Presents of Cascaded Mixture Exponential-Generalized Gamma Turbulence
论文作者
论文摘要
水下无线光学通信是基于浮标的高速跨海通信的关键技术之一，在该通信节点是垂直部署的。由于水下环境的垂直不均匀性，海水通常垂直分为多层，其参数不同，反映了真实的环境。在这项工作中，我们考虑了一个包含$ N $层的广义UWOC频道模型。为了捕获气泡和温度梯度对通道统计的影响，我们通过混合指数式伽马（EGG）分布对每一层进行建模。我们以精确的闭合形式得出了端到端SNR的PDF和CDF。然后，也得出了使用OOK和BPSK的统一BER和中断表达式。通过适当的参数选择，可以对常见的垂直水下光学通信方案的性能和行为进行彻底分析。通过蒙特卡洛模拟验证所有派生表达式。
Underwater wireless optical communication is one of the critical technologies for buoy-based high-speed cross-sea surface communication, where the communication nodes are vertically deployed. Due to the vertically inhomogeneous nature of the underwater environment, seawater is usually vertically divided into multiple layers with different parameters that reflect the real environment. In this work, we consider a generalized UWOC channel model that contains$N$ layers. To capture the effects of air bubbles and temperature gradients on channel statistics, we model each layer by a mixture Exponential-Generalized Gamma(EGG) distribution. We derive the PDF and CDF of the end-to-end SNR in exact closed-form. Then, unified BER and outage expressions using OOK and BPSK are also derived. The performance and behavior of common vertical underwater optical communication scenarios are thoroughly analyzed through the appropriate selection of parameters. All the derived expressions are verified via Monte Carlo simulations.
