Turbulence Channel Modeling and Non-Parametric Estimation for Optical Wireless Scattering Communication

被引：25

作者：

Wang, Kun ^{[1
]}

Gong, Chen ^{[1
]}

Zou, Difan ^{[1
]}

Xu, Zhengyuan ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Univ Sci & Technol China, Sch Informat Sci & Technol, Key Lab Wireless Opt Commun, Hefei 230026, Peoples R China

[2] Tsinghua Univ, Shenzhen Grad Sch, Div Informat Sci & Technol, Shenzhen 100084, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2017年 / 35卷 / 13期

基金：

中国国家自然科学基金;

关键词：

EM algorithm; mixed Poisson distribution; NLOS optical wireless communication; optical wireless scattering communication; solar-blind UV; temporal correlation; turbulence; CAPACITY-ACHIEVING DISTRIBUTIONS; NON-LINE; MIMO TRANSMISSION; UV COMMUNICATION; PERFORMANCE; SIMULATION; PARAMETERS; PPM;

D O I：

10.1109/JLT.2017.2698440

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We adopt mixed Poisson distribution to characterize the channel turbulence for the optical wireless scattering communication. The expectation-maximization algorithm is applied to estimate each component of the mixed Poisson distribution. We analyze the temporal correlation of the turbulence-induced fading, which is crucial for designing the frame length and the training signal pattern for channel estimation. Computer simulations show the good performance of the proposed estimation approaches for the mixed Poisson distribution and the temporal correlation. The out-door experimental results with the transceiver distance of 1500 m are also presented. It is shown that the coherence time length can reach the order of several hundred milliseconds.

引用

页码：2746 / 2756

页数：11

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