Results 41 to 50 of about 399,501 (312)

Indoor visible light communication localization system utilizing received signal strength indication technique and trilateration method [PDF]

open access: yes, 2018
Visible light communication (VLC) based on light-emitting diodes (LEDs) technology not only provides higher data rate for indoor wireless communications and offering room illumination but also has the potential for indoor localization.
Almaadeed, Noor   +5 more
core   +1 more source

Positioning beacon system using digital camera and LEDs [PDF]

open access: yes, 2003
This paper is on a novel use of lighting or signaling devices constructed by light-emitting diodes (LEDs) as a positioning beacon. The idea is that the surface of the LED lighting device is divided into regions and used to show different visual patterns ...
Liu, HS, Pang, G
core   +1 more source

Monte-Carlo simulation of the impact of LED power uncertainty on visible light positioning accuracy [PDF]

open access: yes, 2018
This paper presents a simulation study of the impact of Light Emitting Diode (LED) output power uncertainty on the accuracy of Received Signal Strength (RSS)-based Visible Light Positioning (VLP).
Bastiaens, Sander   +4 more
core   +1 more source

Towards Illumination-aware Visible Light Positioning Network Planning

open access: yes2022 IEEE 12th International Conference on Indoor Positioning and Indoor Navigation (IPIN), 2022
A Visible Light Positioning (VLP) network planner holds tremendous economic potential in that it permits designing a roll-out within given cost, illuminance and accuracy bounds. In this manuscript, the Speed-constrained Multi-objective Particle Swarm Optimization (SMPSO) algorithm is applied to simultaneously optimise a roll-out's maintained ...
Bastiaens, Sander   +3 more
openaire   +1 more source

Li-Pos: A Light Positioning Framework Leveraging OFDM for Visible Light Communication

open access: yesSensors, 2021
The design of solid-state lighting is vital, as numerous metrics are involved in their exact positioning, and as it is utilized in various processes, ranging from intelligent buildings to the internet of things (IoT).
Jianbin Wu   +5 more
doaj   +1 more source

Visible Light Communication and Positioning [PDF]

open access: yes, 2019
In recent years, wireless communications have significantly evolved due to the advanced technology of smartphones;, portable devices; and the rapid growth of Internet of Things, e-Health, and intelligent transportation systems . Moreover, there is anare increasing need fors of emerging intelligent services like positioning and sensing in athe future ...
openaire   +3 more sources

Single-Source VLCP System Based on Solar Cell Array Receiver and Right-Angled Tetrahedron Trilateration VLP (RATT-VLP) Algorithm

open access: yesPhotonics
A significant deployment limitation for visible light communication and positioning (VLCP) systems in energy- and light-source-restricted scenarios is the reliance of photodetectors (PDs) on external power supplies, compromising sustainability and ...
Dawei Xie, Zhongxu Liu, Changyuan Yu
doaj   +1 more source

Multipath Reflections Analysis on Indoor Visible Light Positioning System

open access: yes, 2015
Visible light communication (VLC) has become a promising research topic in recent years, and finds its wide applications in indoor environments. Particularly, for location based services (LBS), visible light also provides a practical solution for indoor ...
Gu, Wenjun   +2 more
core   +1 more source

Visible Light Communications towards 5G [PDF]

open access: yes, 2015
5G networks have to offer extremely high capacity for novel streaming applications. One of the most promising approaches is to embed large numbers of co-operating small cells into the macro-cell coverage area.
Chvojka, P.   +3 more
core   +2 more sources

Arms down cone beam CT hepatic angiography: are we focusing on the wrong target? [PDF]

open access: yes, 2018
We read with great interest the recent article by Dr. Gonzalez-Aguirre and colleagues entitled ‘‘Arms Down Cone Beam CT Hepatic Angiography Performance Assessment: Vascular Imaging Quality and Imaging Artefacts’’ [1]. One of the most important advantages
Argiro, R.   +4 more
core   +1 more source

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