Channel Model and Modulation Schemes for Visible Light Communications

被引：0
|
作者：
Lee, Kwonhyung [1 ]
Park, Hyuncheol [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
来源：
2011 IEEE 54TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2011年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present indoor multi path dispersion characteristics for visible light communications (VLC). We generalize the conventional ray-tracing model by including wavelength-dependent white LED characteristics and spectral reflectance of indoor reflectors. We perform a computer simulation to compare the power delay profile of the VLC with that of infrared communications. The VLC uses solid-state lightings to transmit information; therefore it is necessary that modulation schemes for the VLC provide dimming control. We consider several modulation schemes to offer both functions of modulating data-stream and controlling the brightness at the same time. We analyze communication performance in terms of power requirement and spectral efficiency.
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页数：4
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