ABSTRACT
Visible light communications (VLC) have gained significant attention as a potential solution for the radio spectrum crunch. To achieve high data rates, emerging transmitter devices like 2D digital micro-mirror devices (DMD) have been proposed, offering significantly faster state flipping rates compared to conventional liquid crystalline shutters. However, previous approaches utilizing DMD suffered from a lack of spatial diversity, as they used all micro-mirrors in the same state. This paper introduces EV-DMD, a novel approach that utilizes DMD as a 2D transmitter, working in tandem with an event-based vision (EV) camera. In this method, multiple bit streams are transmitted in parallel through different mirror blocks of the DMD, while an EV camera simultaneously decodes multiple light blocks, enabling a truly 2D high-speed VLC system. To the best of our knowledge, this is the first implementation of a 2D VLC system that achieves an order-of-magnitude improvement in bit rate compared to state-of-the-art solutions.
- Seyed Keyarash Ghiasi, Marco A Zúñiga Zamalloa, and Koen Langendoen. 2021. A principled design for passive light communication. In Proceedings of the 27th Annual International Conference on Mobile Computing and Networking. 121--133. 1Google ScholarDigital Library
- Mohsen Kavehrad. 2013. Optical wireless applications: A solution to ease the wireless airwaves spectrum crunch. In Broadband Access Communication Technologies Vii, Vol. 8645. SPIE, 109--115. 1Google Scholar
- Talia Xu, Miguel Chávez Tapia, and Marco Zúñiga. 2022. Exploiting Digital {Micro-Mirror} Devices for Ambient Light Communication. In 19th USENIX Symposium on Networked Systems Design and Implementation (NSDI 22). 387--400. 1, 3Google Scholar
Index Terms
- Demo: EV-DMD: a high-speed VLC system
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