Robust UOWC systems against bubble-induced impairments via transmit/receive diversities
arXiv:1908.01486
The paper studies how bubbles in water degrade underwater wireless optical communication links and shows that using transmit and receive diversity with a 2×2 MIMO system, repetition coding, and maximum‑ratio combining can greatly reduce outage probability and enable a robust 780‑Mbit/s transmission.
Abstract
We systematically investigate the bubble-induced performance degradation for underwater wireless optical communication (UOWC) with different bubble sizes and positions. By using different transmit and receive diversities, we investigate the effectiveness of transmit/receive diversity on the mitigation of the bubble-induced impairment to the UOWC link. With the help of a 2 by 2 MIMO using repetition coding (RC) and maximum ratio combining (MRC), a robust 780-Mbit/s UOWC transmission is achieved. The corresponding outage probability can be significantly reduced from 34.6% for the system without diversity to less than 1%.