Oct. 2019

Article Contents

Chinese Optics> 2019> 12(5): 1100-1108.

XIANG Lei, CHEN Chun-yi, YAO Hai-feng, NI Xiao-long, PAN Shi, LIU Zhong-hui, LOU Yan. Measurement of instantaneous-fading correlation in bidirectional optical channels through atmospheric turbulence[J]. Chinese Optics, 2019, 12(5): 1100-1108. doi: 10.3788/CO.20191205.1100

Citation:

XIANG Lei, CHEN Chun-yi, YAO Hai-feng, NI Xiao-long, PAN Shi, LIU Zhong-hui, LOU Yan. Measurement of instantaneous-fading correlation in bidirectional optical channels through atmospheric turbulence[J].Chinese Optics, 2019, 12(5): 1100-1108.doi:10.3788/CO.20191205.1100

Citation:

XIANG Lei, CHEN Chun-yi, YAO Hai-feng, NI Xiao-long, PAN Shi, LIU Zhong-hui, LOU Yan. Measurement of instantaneous-fading correlation in bidirectional optical channels through atmospheric turbulence[J].Chinese Optics, 2019, 12(5): 1100-1108.doi:10.3788/CO.20191205.1100

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Measurement of instantaneous-fading correlation in bidirectional optical channels through atmospheric turbulence

doi:10.3788/CO.20191205.1100

1.
Key Laboratory for Defense Discipline of Space-to-Ground Laser Communication Technology, Changchun 130022, China
2.
School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
3.
School of Electrical and Information Engineering, Changchun University of Science and Technology, Changchun 130022, China

Funds:

the National Natural Science Foundation of China61775022

the National Natural Science Foundation of China61475025

the Science and Technology Development Program of Jilin Province of China20170521001HJ

the Science and Technology Development Program of Jilin Province of China20180519012JH

China Postdoctoral Science Foundation2017M621179

More Information

Corresponding author:CHEN Chun-yi, E-mail:chenchunyi@hotmail.com.cn
Received Date:19 Nov 2018
Rev Recd Date:04 Jan 2019
Publish Date:01 Oct 2019

Abstract

Abstract

To prove the reciprocity of an atmospheric turbulent channel in bidirectional optical transmission systems, we propose a method for measuring the correlation between the fading of instantaneously received signals and establish a mathematical model for analyzing the measurement data. Experiments of bidirectional optical transmission measurements were carried out between two tall buildings separated by 883 m. According to the measured speckle image data, we verified the instantaneous-fading correlation of the channel and analyzed the effect of the normalized received signal fluctuation variance on the correlation coefficient in practical scenarios. It was shown that most of the instantaneous-fading correlation coefficients of optical channels in the two counter-directions were above 0.85 and even up to 0.95, which proves that reciprocity can be well maintained for a bidirectional turbulent optical channel. With an increasing fluctuation variance of the normalized received optical signal, the correlation coefficient is slightly descending.
- instantaneous fading,
- atmospheric turbulence,
- bidirectional optical channel,
- reciprocity

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References (20)

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