Wang Jingyu, Gao Dingshan, Li Juan, Chen Dongliang, Ding Deqiang, Dong Yuzhao
J Opt Soc Am A Opt Image Sci Vis. 2024 Jun 1;41(6):1044-1058. doi: 10.1364/JOSAA.514356.
The performance analysis of a free space optical (FSO) communication system in the presence of random jamming is presented over a Málaga () distributed channel model with pointing errors and atmospheric attenuation. Firstly, the probability density function expressions of the transmission channel, signal-to-jamming ratio, and signal-to-noise ratio are derived. Then, considering the probability of the jammer and Gaussian white noise, the closed-form expressions for the ergodic channel capacity, outage probability, and average bit error rate are derived. Moreover, asymptotic expressions for the aforementioned performance metrics are also derived to ascertain the diversity gain of the system. Extensive Monte Carlo simulations are performed to demonstrate the credibility of this theoretical analysis. Results indicate that the adverse impact of random jamming is higher than that of Gaussian noise for the FSO communication system. Besides, this observation highlights the pulsating nature of the jamming effect, showcasing that within high signal-to-jamming ratio regions, a low probability jammer exerts the most significant impact on the FSO system.
针对存在随机干扰的自由空间光（FSO）通信系统，在具有指向误差和大气衰减的马拉加（）分布信道模型上进行了性能分析。首先，推导了传输信道、信号干扰比和信噪比的概率密度函数表达式。然后，考虑干扰器和高斯白噪声的概率，推导了遍历信道容量、中断概率和平均误码率的闭式表达式。此外，还推导了上述性能指标的渐近表达式，以确定系统的分集增益。进行了广泛的蒙特卡罗模拟，以证明该理论分析的可信度。结果表明，对于FSO通信系统，随机干扰的不利影响高于高斯噪声。此外，这一观察结果突出了干扰效应的脉动性质，表明在高信号干扰比区域内，低概率干扰器对FSO系统的影响最为显著。
