湍流
协方差
频道(广播)
衰退
自由空间光通信
物理
计算机科学
对数正态分布
光学
统计物理学
模拟
光通信
机械
数学
电信
统计
出处
期刊:Applied optics
[The Optical Society]
日期:2015-10-21
卷期号:54 (31): 9055-9055
被引量:23
摘要
Free-space optical (FSO) communication may be severely influenced by the inevitable turbulence effect that results in channel gain fluctuations and fading. The objective of this paper is to provide a simple and effective simulator of the weak-turbulence FSO channel that emulates the influence of the temporal covariance effect. Specifically, the proposed model is based on lognormal distributed samples with a corresponding correlation time. The simulator is based on the solution of the first-order stochastic differential equation (SDE). The results of the provided SDE analysis reveal its efficacy for turbulent channel modeling.
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