UPDATE: Zenodo migration postponed to Oct 13 from 06:00-08:00 UTC. Read the announcement.

Conference paper Open Access

Experimental Characterization of Sub-Pixel Underwater Optical Camera Communications

Majlesein, Behnaz; Matus, Vicente; Jurado-Verdu, Cristo; Guerra, Victor; Rabadan, Jose; Rufo, Julio

Underwater Wireless Optical Communication (UWOC) is a promising technology to enable underwater communications for exploring and monitoring marine activities due to its high bandwidth and low latency. Furthermore, underwater optical camera communication (UOCC) takes advantage of light-emitting diodes (LEDs) and cameras already embedded in underwater devices (e.g., drones). In this work, a global shutter-based UOCC system is experimentally tested under a sub-pixel condition, where the dimensions of the LED in the image plane (in µm) are smaller than a single pixel. Although the LED projection dimensions are less than a single pixel, the incoming light irradiance spreads over a limited image sensor area. The results reveal that a 2 m link with a bit rate of 8 bps per channel (24 bps in total) can be attained using an RGB LED as a transmitter and a digital camera as a receiver by applying the point spread function for the demodulation. The validation of this system in sub-pixel conditions guarantees the operation of long-distance UOCC links, where extensive LED sources are perceived as single points in the image. In addition, as the LED dimensions in the image plane are significantly small, the camera can effectively accommodate several transmitters, increasing the link throughput considerably.

Files (3.9 MB)
Name Size
2022csndsp_uwocc_subpx .pdf
3.9 MB Download
All versions This version
Views 9191
Downloads 7979
Data volume 311.3 MB311.3 MB
Unique views 8383
Unique downloads 7676


Cite as