Performance improvement of coherent free-space optical communication with quadrature phase-shift keying modulation using digital phase estimation

	Performance improvement of coherent free-space optical communication with quadrature phase-shift keying modulation using digital phase estimation
	Li, X. L.; T. W. Geng; S. Ma; Y. T. Li; S. J. Gao and Z. Y. Wu
	2017
发表期刊	Applied Optics
卷号	56 期号:16
摘要	The performance of coherent free-space optical (CFSO) communication with phase modulation is limited by both phase fluctuations and intensity scintillations induced by atmospheric turbulence. To improve the system performance, one effective way is to use digital phase estimation. In this paper, a CFSO communication system with quadrature phase-shift keying modulation is studied. With consideration of the effects of log-normal amplitude fluctuations and Gauss phase fluctuations, a two-stage Mth power carrier phase estimation (CPE) scheme is proposed. The simulation results show that the phase noise can be suppressed greatly by this scheme, and the system symbol error rate performance with the two-stage Mth power CPE can be three orders lower than that of the single-stage Mth power CPE. Therefore, the two-stage CPE we proposed can contribute to the performance improvements of the CFSO communication system and has determinate guidance sense to its actual application. (C) 2017 Optical Society of America
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59025
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, X. L.,T. W. Geng,S. Ma,et al. Performance improvement of coherent free-space optical communication with quadrature phase-shift keying modulation using digital phase estimation[J]. Applied Optics,2017,56(16).
APA	Li, X. L.,T. W. Geng,S. Ma,Y. T. Li,&S. J. Gao and Z. Y. Wu.(2017).Performance improvement of coherent free-space optical communication with quadrature phase-shift keying modulation using digital phase estimation.Applied Optics,56(16).
MLA	Li, X. L.,et al."Performance improvement of coherent free-space optical communication with quadrature phase-shift keying modulation using digital phase estimation".Applied Optics 56.16(2017).

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