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Abstract
In this paper, for the first time, to the best of our knowledge, we experimentally demonstrate the use of a curved organic light emitting diode (OLED) as a transmitter (Tx) in the non-line-of-sight (NLOS) optical camera communication (OCC) link for an indoor environment using a camera as a receiver. The proposed NLOS-OCC scheme is evaluated for the signal-to-noise ratio (SNR) and the reception success rates ${R_{\rm{rs}}}$ under key photographic and communication parameters, including exposure times ${t_{\rm{exp}}}$ and gain values ${G_v}$, as well as the transmission frequency ${f_s}$ and the distance $L$. The SNR analysis is performed using a binary classification procedure based on a Gaussian mixture model for the first time, to the best of our knowledge, for OLED-based NLOS-OCC links. We also derive and demonstrate that the effect of ${G_v}$ on the SNR with respect to $L$ is minimal based on the pixel illumination model. The initial analysis suggests that, for a wall reflector-based NLOS-OCC link that is 2 m long, the SNR and ${R_{\rm{rs}}}$ increase by 1 dB and 4% (83–87%) for ${f_s}$ of 600 Hz, with an increase in ${t_{\rm{exp}}}$ of 1000–1500 µs and ${G_v}$ of 25–45 dB.
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