2D-OFDM for Optical Camera Communication: Principle and Implementation

The orthogonal frequency division multiplexing (OFDM) waveform is a well-known implementation for light fidelity but quite a novel implementation for optical camera communication (OCC). This paper proposes the two-dimensional OFDM (2D-OFDM) OCC system, namely screen OCC, which implements a single screen luminaire, composed of multiple cells so that a data rate of up to 50 kb/s can be achieved with the 2D-OFDM waveform. This paper includes a mature system design based on theoretical analysis and implementation validation. The various technical details described include system architectures, theoretical analyses of the link budget, and detailed implemental guidance for the proposed Screen OFDM system. The reliability of the proposed system was verified through numerical performance measurements, as recorded that the overall BER of 10(-5) is achievable within the communication distance of 4.5 m and the viewing angle of 30 degrees. The overall performance of the screen OFDM is also compared with a single-carrier modulation approach, asynchronous-quick-link code within the ongoing IEEE 802.15.7 m standard, to demonstrate the reliable performance of the proposing system.