Document Type : Research Paper
Authors
1 University of Technology, Laser and Optoelectronics Engineering Department - Iraq
2 University of Mustansiriyah, College of Science, Physics Department - Iraq
Abstract
In this research, texts were sent by pulse width modulation
(PWM) in the channel of clean water using
Arduino hardware and software for an underwater wireless optical
communication system (UWOC). The air bubbles device utilized the
disturbance at different distances from the transmitter source within the
channel of clean water. The total length of the channel is (1) m. In this
study, the source of transmitter wavelengths 650 nm was used with the
power of 80mw. The results showed that the received power was 32 mW
in the clean water, while when air bubbles pump within the channel of
clean water at 0.2m, 0.5m and 0.8m away from the transmitter source,
the received power was 28 mW, 27.5 mW, and 27 mW respectively. This
paper shows that max. Signal to Noise Ratio (S/N) and min. attenuation
(α) in the clean water were (24.637dB) and (3.979dB/m) respectively.
The practical results showed that the Symbol Error Rate (SER) in the
case of the air bubbles pump was maximum (0.03) when the value of
(S/N) was minimum (23.899).
Keywords
- Underwater wireless Optical Communication System (UWOC)
- Signal to Noise Ratio (S/N)
- Attenuation (α)
- Symbol Error Rate (SER)
- (PWM) pulse width modulation
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