基于艾里光的自由空间光通信系统性能分析

为进一步分析艾里光在光通信中的可行性, 以艾里光为载波, 研究了弱湍流下基于对数正态分布湍流信道模型的自由空间光(FSO)通信系统的平均误码率、中断概率及平均信道容量, 与相同湍流条件和传输距离下以高斯光为载波的FSO通信系统性能进行了对比, 同时讨论了艾里光自身的光束宽度、指数截断因子及传输距离对系统性能的影响。仿真结果表明, 在湍流条件及传输距离相同时, 基于艾里光的FSO通信系统的性能明显优于基于高斯光的FSO通信系统性能, 且随着平均信噪比的增加, 以艾里光为载波的链路性能优势体现更为显著。

Abstract

In order to further analyze the feasibility of Airy beam in optical communication, taking Airy beam as the carrier, the average bit error rate, outage probability and average channel capacity of free space optical(FSO) communication system based on lognormal distribution turbulent channel model under weak turbulence are studied, and the performance of FSO communication system with Gaussian beam as the carrier under the same turbulence conditions and transmission distance is compared. At the same time, the effects of beam width, exponential truncation factor and propagation distance of Airy beam on system performance are discussed. The simulation results show that under the same turbulence conditions and transmission distance, the performance of FSO communication system based on Airy beam is significantly better than that based on Gaussian beam, and with the increase of average signal-to-noise ratio, the link performance advantage of Airy beam as carrier is more significant.

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秦蕴仪, 谢孟桐, 徐智勇, 汪井源, 李建华, 赵继勇, 戚艾林. 基于艾里光的自由空间光通信系统性能分析[J]. 光通信技术, 2022, 46(4): 46. QIN Yunyi, XIE Mengtong, XU Zhiyong, WANG Jingyuan, LI Jianhua, ZHAO Jiyong, QI Ailin. Performance analysis of free space optical communication system based on Airy beam[J]. Optical Communication Technology, 2022, 46(4): 46.

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