Robust UOWC systems against bubble-induced impairments via transmit/receive diversities

TL;DR

This paper explores how transmit and receive diversities can significantly improve the robustness of underwater wireless optical communication systems against bubble-induced impairments, achieving high data rates and low outage probabilities.

Contribution

It demonstrates the effectiveness of transmit/receive diversity techniques, including MIMO with repetition coding and MRC, in mitigating bubble-related impairments in UOWC systems.

Findings

Achieved 780 Mbit/s data rate with diversity techniques.

Reduced outage probability from 34.6% to below 1%.

Validated the effectiveness of MIMO and diversity methods in underwater optical links.

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%.