Passive Visible Light Communication: Utilizing the Unstable Region Of Liquid Crystals

As more and more devices have become wireless, the traditional Radio Frequency (RF) spectrum has become densely populated. To relieve this pressure,<br/>communication using light, visible light communication (VLC), has been proposed by many researchers. However, not all light sources can be modulated<br/>to transmit information. Therefore, the...

Passive visible light networks: Taxonomy and opportunities

Artificial lighting has been used mainly for illumination for more than a century. Only recently, we have started to transform our lighting infrastructure to provide new services such as sensing and communication. These advancements have two key requirements: the ability to modulate light sources (for data transmission) and the presence of...