论文标题
室外可见光通信系统的性能分析
Performance Analysis of an Outdoor Visible Light Communications System for Internet-of-Vehicles
论文作者
论文摘要
本文着眼于用于汽车互联网（IOV）的户外可见光（OVLC）通信系统的性能。在拟议的系统中，放大（AF）机会方案用于将信息范围从交通信号灯扩展到车辆。使用伽马 - 伽马通道增益和兰伯特直流电流（DC）通道增益来建模每个传输的褪色系数以及用于表示系统噪声的短和热噪声模型。通过得出累积分布函数（CDF）的闭合形式表达式和概率密度函数（PDF）来检查系统的统计数据。新型的闭合形式方程也是为中断概率和偏僻的能力而开发的。进行的数值模拟表明，随着湍流强度的降低，系统的性能都可以提高出现概率和甲基阵行能力。结果还表明，随着车辆之间的距离的增加，系统性能会更恶化。
This paper looks at the performance of an outdoor visible light (OVLC) communication system used for Internet-of-Vehicles (IoV). In the proposed system an amplify-and-forward (AF) opportunistic scheme is used to extend the range of information broadcast from a traffic light to vehicles. The Gamma-Gamma channel gain and the Lambertian direct current (DC) channel gain are used to model the fading coefficient of each transmission and the short and thermal noise models used to represent the system noise. The statistics of the system are examined by deriving closed-form expressions for the cumulative distribution function (CDF) and probability density function (PDF) for the equivalent end-to-end signal-to-noise ratio (SNR). Novel closed form equations are also developed for the outage probability and ergodic capacity. Numerical simulations performed showed that the system performance in terms of both outage probability and ergodic capacity improves with decreasing turbulence intensity. Results also illustrate that, as the distance between the vehicles increases, the system performance is more deteriorated.
