Vlc is a subset of optical wireless communications technologies.
Indoor positioning system using visible light communication.
The performance of the positioning system is determined by the layout of leds the receiver circuit incidence angle of light.
Different from conventional indoor positioning technologies mentioned above the visible light positioning vlp technology is a kind of indoor positioning technology based on visible light communication vlc technology.
By comparison vlp has such advantages as cost saving environmentally friendly anti rf interference and so on which.
Moreover visible light communications technology enables users to find out which floor they are located on.
Moreover the majority of visible light positioning.
The indoor positioning system by visible light com munication wireless.
Communication technology using led lights.
Visible light communication vlc is a data communications variant which uses visible light between 400 and 800 thz 780 375 nm.
This paper proposes a novel indoor visible light communication vlc positioning model by connecting k nearest neighbors knn and random forest rf algorithms for reflective environments namely knn rf.
During that time the research on vlc was not popular mainly because of the high production cost of led.
When using visible light communication it becomes possible to identify the user s position within a range of 1 2m.
A highly accurate indoor positioning under the effect of multipath reflections has been a prominent challenge for recent research.
This paper analyzes an indoor positioning system using white lighting leds.
Recently visible light communication vlc has gradually become a research hotspot in indoor environments because its advantages of illumination and relative high positioning accuracy.
The technology uses fluorescent lamps ordinary lamps not special communications devices to transmit signals at 10 kbit s or leds for up to 500 mbit s over short distances.
In this paper a typical led arrangement design using 9 3x3 led array in an indoor positioning system ips based on visible light communication vlc is introduced.
Time difference of arrival between anchor points and tags is estimated by means of positioning reference signals embedded into the orthogonal frequency division multi plexing ofdm based visible light.
1 1 visible light communication vlc based indoor positioning system ips research on visible light communication vlc was begun about 10 years ago according to the published date of tanaka et al.
Indoor visible light communication positioning system using a rf carrier allocation technique j ournal of lightwave technology vol.
