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http://hdl.handle.net/10553/70319
Título: | Experimentally derived feasibility of optical camera communications under turbulence and fog conditions | Autores/as: | Matus Icaza, Vicente Eso, Elizabeth Teli, Shivani Rajendra Perez-Jimenez, Rafael Zvanovec, Stanislav |
Clasificación UNESCO: | 3307 Tecnología electrónica 3325 Tecnología de las telecomunicaciones |
Palabras clave: | Cmos Image Sensor Fog Attenuation Heat-Induced Turbulence Meteorological Visibility Optical Camera Communications (Occ), et al. |
Fecha de publicación: | 2020 | Publicación seriada: | Sensors | Resumen: | Optical camera communications (OCC) research field has grown recently, aided by ubiquitous digital cameras; however, atmospheric conditions can restrict their feasibility in outdoor scenarios. In this work, we studied an experimental OCC system under environmental phenomena emulated in a laboratory chamber. We found that the heat-induced turbulence does not affect our system significantly, while the attenuation caused by fog does decrease the signal quality. For this reason, a novel strategy is proposed, using the camera’s built-in amplifier to overcome the optical power loss and to decrease the quantization noise induced by the analog-digital converter of the camera. The signal quality has been evaluated using the Pearson’s correlation coefficient with respect to a reference template signal, along with the signal-to-noise ratio that has been empirically evaluated. The amplification mechanism introduced allows our system to receive the OCC signal under heavy fog by gradually increasing the camera gain up to 16 dB, for meteorological visibility values down to 10 m, with a correlation coefficient of 0.9 with respect to clear conditions. | URI: | http://hdl.handle.net/10553/70319 | ISSN: | 1424-8220 | DOI: | 10.3390/s20030757 | Fuente: | Sensors [ISSN 1424-8220], v. 20 (3), (Enero 2024) |
Colección: | Artículos |
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