| Abstrakt: |
In this paper, texts were experimentally transmitted by On-Off-Key (OOK) modulation using an underwater wireless optical communication system (UWOC) in a channel containing water of varying salinity as a result of changes in the concentration of sodium chloride (NaCl). Mathematical equations are used using a MATLAB program to compare theoretical and practical results. (NaCl) concentration was changed from 10 to 30% to achieve a different salinity of water. A two-laser diode with a power of 30 mW and wavelengths of 445 nm and 520 nm has been employed in the transmitter. The results showed that the minimum attenuation coefficient, higher SNR, lower BER, and maximum data rate when using a 520-nm light source in clear water were 0.319 dB/m, 20.32 dB, 1.21 × 10−2, and 6.77 kbps, respectively. |
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