Abstract:
Turbidity, suspended particles, small bubbles, and turbulence make underwater communication difficult for mobile nodes. Absorption and scattering corrupt optical signals. Error-correcting codes reduce channel errors by correcting corrupted bits.
This project proposes a Bose-Chaudhuri-Hocquenghem (BCH) (31, 16)-coded underwater wireless optical communication (UWOC) system to improve power-efficient sensor node communication. The battery-powered BCH-coded system allows the node to have an on-site data processing unit and untethered communication.
It requires a reasonable amount of computing power. Embedded C software runs the BCH code’s encoder and decoder algorithms on an Atmel ATmega128A microcontroller. Simulating scattering and absorption, noise from surrounding and ambient light, turbidity, air bubbles, and turbulence in a natural underwater environment evaluates the system’s performance.
At a moderate turbidity level of 64 NTU, a 0.5 Mbps BCH-coded link achieves a 93.5% PSR, 6% better than the uncoded system, with weak turbulence (induced by a pump at 2.5 L/min displacement rate) and air bubbles (generated by an aerating jet at 1.2 L/min airflow rate).
Note: Please discuss with our team before submitting this abstract to the college. This Abstract or Synopsis varies based on student project requirements.
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