Theoretical Accuracy Analysis of Indoor Visible Light Communication Positioning System Based on Received Signal Strength Indicator
Theoretical Accuracy Analysis of Indoor Visible Light Communication Positioning System Based on Received Signal Strength Indicator
复制标题
基于接收信号强度指示器的室内可见光通信定位系统理论精度分析
DOI：
10.1109/jlt.2014.2349530
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发表时间：
2014-08
影响因子：
4.7
通讯作者：
施安存
中科院分区：
文献类型：
--
作者：
张雪丽;段靖远;付跃刚;施安存
本文分析了一种使用白色发光二极管的室内定位系统。定位系统的性能取决于LED的布局、接收电路、光的入射角、LED光源和光电二极管。推导了接收信号强度指示算法的理论精度极限Cramer-Rao界。分析了在特定场景下多径反射和LED与接收机光轴不平行对定位精度的影响。研究表明，在一定的环境下，如果预先测量了漫射信道增益，且调制速率远小于信道截止频率，则理论精度极限不受多径链路的影响。详细分析了系统的多种噪声。讨论了室内均匀照明对定位精度的影响。结果表明，三角形LED阵列的理论估计精度高于正方形LED阵列。在典型参数值下，系统的仿真理论精度可达厘米级。
This paper analyzes an indoor positioning system using white lighting LEDs. The performance of the positioning system is determined by the layout of LEDs, the receiver circuit, incidence angle of light, LED light source, and the photodiode. The Cramer-Rao bound as the theoretical accuracy limitation of received signal strength indicator algorithm is derived. The influences to positioning accuracy of multipath reflections and unparallel optical axis of LEDs and receivers are analyzed in certain scenarios. It is concluded that if the diffuse channel gain is measured previously in a certain environment and the modulation speed is far less than the channel cutoff frequency, the theoretical accuracy limit is not affected by multipath link. Multiple noises of system are analyzed in detail. The influence to positioning accuracy of indoor uniform illumination is also discussed. The result proves that the theoretical estimated accuracy of triangular LEDs array is higher than square LEDs array. With typical parameter values, the simulated theoretical accuracy of system is up to the level of centimeter.
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DOI：
10.1109/eeei.2002.1178461
发表时间：
2002-12
期刊：
The 22nd Convention on Electrical and Electronics Engineers in Israel, 2002.
影响因子：
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DOI：
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发表时间：
2004-07
期刊：
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影响因子：
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作者：
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影响因子：
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通讯作者：
T. Komine;Junhwan Lee;S. Haruyama;M. Nakagawa