Modeling and Experimental Study of The Vibration Effects in Urban Free-Space Optical Communication Systems

IEEE Photonics Journal

Wenqi Cai¹  Ibrahima N'Doye¹  Boon S. Ooi¹  Taous Meriem Laleg-Kirati¹  Mohamed-Slim Alouini¹ 

[1] Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia;

关键词: Urban free-space optical (UFSO) communication;    vibration analysis;    received optical power;    probability density function (PDF);    Bifurcated-Gaussian distribution.;   

DOI  :  10.1109/JPHOT.2019.2945695

来源: DOAJ

【 摘 要 】

Free-space optical (FSO) communication, considered as a last-mile technology, is widely used in many urban scenarios. However, the performance of urban free-space optical (UFSO) communication systems fades in the presence of system vibration caused by many factors in the chaotic urban environment. In this paper, we develop a dedicated indoor vibration platform and atmospheric turbulence to estimate the Bifurcated-Gaussian (B-G) distribution model of the receiver optical power under different vibration levels and link distances using nonlinear iteration method. Mean square error (MSE) and coefficient of determination ($R^2$) metrics have been used to show a good agreement between the PDFs of the experimental data with the resulting B-G distribution model. Besides, the UFSO channel under the effects of both vibration and atmospheric turbulence is also explored under three atmospheric turbulence conditions. Our proposed B-G distribution model describes the vibrating UFSO channels properly and can easily help to perform and evaluate the link performance of UFSO systems, e.g., bit-error-rate (BER), outage probability. Furthermore, this work paves the way for constructing completed auxiliary control subsystems for robust UFSO links and contributes to more extensive optical communication scenarios, such as underwater optical communication, etc.

【 授权许可】

Unknown