Design and experimental demonstration of 8-QAM coherent free-space optical communication using amplitude compensation and phase recovery

doi:10.1364/AO.427122

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	Design and experimental demonstration of 8-QAM coherent free-space optical communication using amplitude compensation and phase recovery
	L. Li; T. Geng; Z. Wu; S. Gao and X. Li
	2021
发表期刊	Applied Optics
ISSN	1559128X
卷号	90 期号:18 页码:5345-5353
摘要	In this paper, a new, to the best of our knowledge, scheme is proposed to mitigate the atmospheric turbulence effect in coherent free-space optical (FSO) communications with 8-quadrature amplitude modulation by employing amplitude compensation and phase recovery. The amplitude compensation and phase recovery algorithm in the scheme can significantly improve system performance without acquiring instantaneous channel state information or probability density function of a turbulence model. Numerical studies show that the bit error rate of the proposed scheme is four orders of magnitude lower than that of the system without any algorithm over a lognormal turbulence channel with normalized standard deviation of irradiance = 0.25 and phase noise with normalized variance 2 = 0.07, when the frequency offset fo = 20 MHz, combined linewidth 1 f = 10 kHz, and average signal-to-noise ratio = 20 dB. Experiments are also carried out to investigate the performance of the scheme, and the results prove its superiority. Hence, this scheme can contribute to practical realization of the FSO system. 2021 Optical Society of America
DOI	10.1364/AO.427122
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65141
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. Li,T. Geng,Z. Wu,et al. Design and experimental demonstration of 8-QAM coherent free-space optical communication using amplitude compensation and phase recovery[J]. Applied Optics,2021,90(18):5345-5353.
APA	L. Li,T. Geng,Z. Wu,&S. Gao and X. Li.(2021).Design and experimental demonstration of 8-QAM coherent free-space optical communication using amplitude compensation and phase recovery.Applied Optics,90(18),5345-5353.
MLA	L. Li,et al."Design and experimental demonstration of 8-QAM coherent free-space optical communication using amplitude compensation and phase recovery".Applied Optics 90.18(2021):5345-5353.

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