An LED-to-LED Visible Light Communication System with Software-Based Synchronization

 

The proposed system enables new entertaining applications by creating the illusion (for a human observer) that both transmitting and receiving LEDs are always switched on.

December 3, 2012
IEEE Globecom 2012

 

Authors

Stefan Schmid (Disney Research/ETH Joint PhD)

Giorgio Corbellini (Disney Research)

Stefan Mangold (Disney Research)

Thomas Gross (ETH Zurich)

An LED-to-LED Visible Light Communication System with Software-Based Synchronization

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Abstract

An LED can emit and receive light and provides, therefore, a simple building block for a Visible Light Communication (VLC) system. We describe a microcontroller-based system and report on its effectiveness in a testbed. The key idea is to use a microcontroller to provide synchronization so that the receiver can lock to the transmitted signal in a fast and efficient way. Further, we propose a combined light emission and light measurement approach to receive with an LED while emitting light. The proposed system enables new entertaining applications by creating the illusion (for a human observer) that both transmitting and receiving LEDs are always switched on.

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