Direct Positioning in Synchronous and Asynchronous Visible Light Systems

被引：0
作者：
Keskin, Musa Furkan [1 ]
Gezici, Sinan [1 ]
Arikan, Orhan [1 ]
机构：
[1] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey
来源：
2017 IEEE INTERNATIONAL BLACK SEA CONFERENCE ON COMMUNICATIONS AND NETWORKING (BLACKSEACOM) | 2017年
关键词：
Estimation; Cramer-Rao lower bound; visible light; Lambertian pattern; direct positioning; LOCALIZATION; COMMUNICATION; ACCURACY;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, direct positioning approaches are investigated for both synchronous and asynchronous visible light systems. First, the maximum likelihood estimator (MLE) and the Cramer-Rao lower bound (CRLB) are derived for the synchronous scenario by considering the information from both channel attenuation factors and time delay parameters. Then, asynchronous visible light positioning (VLP) systems are investigated and the corresponding CRLBs and MLEs are obtained based on received signal strength (RSS) information. It is shown that the direct and two-step position estimators are equivalent in the asynchronous scenario under mild conditions. Numerical examples are provided to illustrate the theoretical results.
引用
收藏
页码：228 / 233
页数：6
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