Get Connected Through Light
The growth of Internet-connected and multimedia-capable mobile devices has been exponential and the challenge to cope with the increasing demand of bandwidth-intensive services is expected to continue. Existing RF wireless technologies suffer from the spectrum scarcity, however focusing on spectrum alone to grow capacity is limited and unlikely to solve the expected network congestion. Approaches to add capacity including multiple antennas and heterogeneous networks (HetNets) are considered. Visible light communications (VLC) is an emerging technology and a potential solution to the wireless spectrum shortage. VLC uses the existing lighting infrastructure to offer wireless access combined with high-quality illumination. In this talk, we give an overview on the current VLC research status and discuss the emerging research challenges. We articulate the potential of optical orthogonal frequency-division multiplexing (OFDM) and explore existing research activities to improve power and spectral efficiency of OFDM-based VLC systems. We will also introduce our proposed OFDM solution to address the challenges of incorporating broadband VLC with lighting state control and RF in a hybrid network. Finally, we will highlight the potential applications of VLC including indoor localization, Internet-of-Things (IoTs) and connected health.
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