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	Blind Estimator of Multiple Optical Signals with a Detection Matrix
	Dang, Anhong
	2009
关键词	Free space optical communications scintillation estimation detector matrix COMMUNICATION
英文摘要	An estimator model for multiple optical signals via a detection matrix is proposed and investigated. In the model, the intensity of the transmitted optical field is modulated by its own unique pseudo-random (PN) sequence and random binary data symbols, and then an estimated algorithm motivated by a signal subspace approach of using the sample matrix of the received signals is obtained under the hypothesis of a synchronous system. The optical channel is modeled using a log-normal distribution for the received signal intensity for low scintillation indexes. With the aid of numerical simulation, it is shown that the signal-to-noise ratio (SNR) can be estimated within 90% of the actual SNR after less than 18 frames. Moreover, it is shown that the method requires essentially no information about the propagation-channel characteristics and the amplitudes of signal and noise across the detector matrix.; Computer Science, Software Engineering; Telecommunications; EI; CPCI-S(ISTP); 0
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/293068]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Dang, Anhong. Blind Estimator of Multiple Optical Signals with a Detection Matrix. 2009-01-01.

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