Average capacity analysis of FSO system with Airy beam as carrier over exponentiated Weibull channels

IF 0.7 4区物理与天体物理 Q4 OPTICS

Optica Applicata Pub Date : 2023-01-01 DOI:10.37190/oa230103

Yi Li, Xingchun Chu, Zhongxiang Han, Hanling Tang, Xinkang Song

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引用次数: 0

Abstract

Based on scintillation index of Airy beam and exponentiated Weibull channel model, analytical expressions of average channel capacity for free-space optical (FSO) communication links with Airy beam as signal carrier under weak atmospheric turbulence and on-off keying modulation scheme are derived. The average capacity at various propagation distances, transverse scale factors and exponential decay factors has been evaluated. And we compared the average capacity of FSO links with Airy beam and Gaussian beam as signal carrier. The results show that the average capacity of FSO links with Airy beam as carrier increases with the increase of mean signal-to-noise ratio and decreases uniformly with the increase of propagation distance. When the transverse scale factor of Airy beam is about 2 cm, a higher average capacity can be obtained. And the smaller the exponential decay factor of Airy beam, the larger the average capacity. Under the same source power or source width, the average capacity of FSO links with Airy beam as carrier is significantly higher than that of FSO links with Gaussian beam as carrier. The results of this research have some reference significance for the application of Airy beam in FSO communication system.

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指数威布尔信道上以Airy波束为载波的FSO系统的平均容量分析

基于艾里波束的闪烁指数和指数威布尔信道模型，推导了以艾里波束为信号载体的自由空间光纤通信链路在弱大气湍流和开关键控调制方案下的平均信道容量解析表达式。计算了不同传播距离下的平均容量、横向尺度因子和指数衰减因子。并比较了以艾里波束和高斯波束作为信号载波的FSO链路的平均容量。结果表明，以Airy波束为载波的FSO链路的平均容量随平均信噪比的增加而增加，随传播距离的增加而均匀降低。当艾里梁的横向比例因子约为2 cm时，可获得较高的平均容量。艾里光束的指数衰减系数越小，平均容量越大。在相同的源功率或源宽度下，以艾里波束为载波的FSO链路的平均容量明显高于以高斯波束为载波的FSO链路。研究结果对Airy波束在自由无线通信系统中的应用具有一定的参考意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optica Applicata 物理-光学

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

4 months

期刊介绍： Acoustooptics, atmospheric and ocean optics, atomic and molecular optics, coherence and statistical optics, biooptics, colorimetry, diffraction and gratings, ellipsometry and polarimetry, fiber optics and optical communication, Fourier optics, holography, integrated optics, lasers and their applications, light detectors, light and electron beams, light sources, liquid crystals, medical optics, metamaterials, microoptics, nonlinear optics, optical and electron microscopy, optical computing, optical design and fabrication, optical imaging, optical instrumentation, optical materials, optical measurements, optical modulation, optical properties of solids and thin films, optical sensing, optical systems and their elements, optical trapping, optometry, photoelasticity, photonic crystals, photonic crystal fibers, photonic devices, physical optics, quantum optics, slow and fast light, spectroscopy, storage and processing of optical information, ultrafast optics.