The average bit error rate (BER) and outage probability of circle polarization shift keying (CPOLSK) modulation in free-space optical (FSO) system operating under exponentiated Weibull (EW) distribution are studied. The closed expression of the average BER is derived by generalized Gauss–Laguerre polynomials. The analytical results show the relationship between the average BER and average signal to noise ratio (SNR) of CPOLSK modulation with the effect of aperture averaging under different turbulence strengths and it is compared with on–off keying (OOK) modulation. The relationship between the outage probability and normalized threshold SNR of CPOLSK modulation is studied as well. All the analytical results are verified by the Monte Carlo simulation.

中文翻译：

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指数Weibull分布上圆偏振移键控调制的性能分析

研究了在指数威布尔（EW）分布下工作的自由空间光学（FSO）系统中的平均误码率（BER）和圆偏振移位键控（CPOLSK）调制的中断概率。平均BER的闭式由广义高斯-拉格里多项式得出。分析结果表明，在不同湍流强度下，平均误码率与CPOLSK调制的平均信噪比（SNR）之间的关系以及孔径平均的影响与开关键控（OOK）调制进行了比较。还研究了中断概率与CPOLSK调制的标准化阈值SNR之间的关系。所有分析结果均通过蒙特卡洛模拟验证。