论文标题
多层水下通道的光学无线通信的统一性能评估
Unified Performance Assessment of Optical Wireless Communication over Multi-Layer Underwater Channels
论文作者
论文摘要
在本文中，我们使用通用伽玛（GG），指数GG（EGG），指数gg（EW），启用Weibull（EW）和Gamma-Gamma（γ-Gamma（γγ）海洋湍流模型模型，我们将多层垂直水下链路建模为级联通道，并统一水下光学通信（UWOC）系统的性能分析。我们为指向误差的概率密度函数（PDF）和累积分布函数（PDF）和累积分布函数（CDF）得出统一的分析表达式（CDF），考虑到独立和非相同（I.NI.D.）的湍流模型和指向误差的零孔模型。我们使用中断概率，平均位错误率（BER）和赤贡能力以渐近表达式来开发所考虑的UWOC系统的性能指标，以进行中断概率和平均BER。我们开发了拟议系统的多样性顺序，以更好地了解高SNR的系统性能。我们还整合了陆地OWC（TOWC），该陆上OWC（TOWC）受到广义Malaga大气湍流的综合效果，雾引起的随机路径增益以及指向误差，以使用固定增益扩增（AF）继电器与UWOC链路进行通信。我们通过使用双变量FOX H功能得出PDF，CDF，中断概率和平均BER来分析混合TWOC和多层UWOC系统的性能。我们使用蒙特卡罗模拟结果来验证我们的精确和渐近表达式，并使用可用于湍流海洋通道的基于测量的参数数据来证明所考虑的水下UWOC系统的性能。
In this paper, we model the multi-layer vertical underwater link as a cascaded channel and unify the performance analysis for the underwater optical communication (UWOC) system using generalized Gamma (GG), exponential GG (EGG), exponentiated Weibull (EW), and Gamma-Gamma (ΓΓ) oceanic turbulence models. We derive unified analytical expressions for probability density function (PDF) and cumulative distribution function (CDF) for the signal-to-noise ratios (SNR) considering independent and non-identical (i.ni.d.) turbulent models and zero bore-sight model for pointing errors. We develop performance metrics of the considered UWOC system using outage probability, average bit error rate (BER), and ergodic capacity with asymptotic expressions for outage probability and average BER. We develop the diversity order of the proposed system to provide a better insight into the system performance at a high SNR. We also integrate a terrestrial OWC (TOWC) subjected to the combined effect of generalized Malaga atmospheric turbulence, fog-induced random path gain, and pointing errors to communicate with the UWOC link using the fixed-gain amplify-and-forward (AF) relaying. We analyze the performance of the mixed TWOC and multi-layer UWOC system by deriving PDF, CDF, outage probability, and average BER using the bivariate Fox H-function. We use Monte-Carlo simulation results to validate our exact and asymptotic expressions and demonstrate the performance of the considered underwater UWOC system using measurement-based parametric data available for turbulent oceanic channels.
