A simple system to provide communication and localization to drones with LEDs

Visible light communication(VLC) is an emerging form of wireless communic- ation that uses visible light, where standard light sources such as LEDs serve as communication devices. Due to visible light bandwidths being significantly higher and underused, VLC offers an alternative to the more commonly used Radio Frequency(RF) devices. While VLC...

Optical Filter Coated PV Cell for Noise-free Outdoor LiFi

In today’s society, the need for alternate high-speed data transmission solutions has increased due to the radio frequency (RF) spectrum’s growing congestion. Visible Light Communication (VLC)-based LiFi has emerged as a possible alternative to current wireless technologies like WiFi. The difficulty, though, is that the photodiode performance as...

Simultaneous drone localization and communication using visible light

Drones that perform complex autonomous movements require a perfect estimate of their current position. However, internal measurement unit (IMU) errors introduce drift in this estimate, leading to significant discrepancies between the predicted and actual location. Various solutions have been proposed to calibrate the IMU, including methods...

Screen antenna: Integrated data transfer and display using RGB LEDs

This thesis presents Screen Antenna - A Visible Light Communication (VLC) system that integrates data transmission and reception, with the conventional pixel display capability of RGB LEDs. The system is constructed with off-the-shelf components and runs on the Arduino Due microcontroller. The hardware and software have been designed with the...

Passive screen-camera communication

The advancement of wireless communication technologies has transformed how we exchange information in our daily lives. However, the increasing demand for wireless communication faces challenges due to limited radio wave bandwidth availability. In this context, visible light communication has emerged as a promising alternative, utilizing visible...

Analysis and modelling of light sources for visible light communication

The considerable increase in the number of devices needing connectivity, such as mobile phones and Internet of Things (IoT) devices, has led to an exponential rise in data volumes during the last years, that will surely continue over the next decade. Therefore, it will be increasingly challenging to provide sufficient RF resources. A novel...

JAB: A generic architecture for power efficient, high throughput mobile VLC applications

Visible Light Communication is a method of wireless communication that avoids the oversaturated frequencies used by radio communication. Prior research typically uses the camera on smartphone for communication, but using a camera is energy-intensive and inefficient. Some alternatives are photodiodes and ambient light sensors, however the former...

Receiving data through light with low-end smartphones

Although the demand for wireless communication continuous to grow, the number of frequencies available in traditional data transmission is limited. Visible Light Communication (VLC) is a promising alternative communication method proven to work on high-end devices. However, large-scale adoption requires VLC to also work on everyday machines. Yet...

Communication with Ambient Light using Digital Micromirror Devices

Passive visible light communication (VLC) takes advantage of the pervasive<br/>nature of ambient light in our environment for wireless transmissions. The<br/>design of transmitters in passive VLC predominantly uses Liquid Crystal Displays (LCD’s). While LCD’s are an economical choice with low power consumption, they lack some key properties that...

Visible Light Communication with Mobile Lights

Artificial lights in our buildings have always been designed to be static for one purpose only; illumination. With the increasing interest in Visible Light Communication (VLC) and a crowded radio-frequency spectrum, static lights in our offices and rooms might not be ideal anymore. VLC can add extra services like high quality communication and...

Passive Localization with Visible Light

Indoor localization is a topic of significant interest for academic and in dustrial. For outdoors, we have Global Positioning System (GPS) working very well, but GPS does not work indoors and we spend more than 90% of the time indoors. Thus, there is a great need to find solution for this prob lem. Many technologies have been proposed for indoor...

Design of a network stack for directional visible light communication

During the last years, Visible light communication (VLC), a novel technology that enables standard Light-Emitting-Diodes (LEDs) to transmit data, is gaining significant attention. In the near future, this technology could enable devices containing LEDs –such as car lights, city lights, screens and home appliances– to form their own networks. VLC...

Vergelijking en implementatie van digitale signaalbewerkingstechnieken bij communicatie via leds

Het ontwerp van een optisch draadloos zendsysteem met witte leds

In dit ontwerprapport wordt een systeem ontworpen dat via ledverlichting in een warenhuis elektronische prijskaartjes aanstuurt. De informatie die op het display van elk kaartje moet verschijnen, wordt onzichtbaar voor het oog gecodeerd in het uitgestuurde licht. Het ontwerp bestaat uit een enkele zender, namelijk de ledverlichting van een...