Full-Duplex Underwater Acoustic Communications

Overview

Underwater communication is hard because radio waves do not travel well in water, so teams rely on sound. Traditional systems act like walkie-talkies: one side speaks, then waits. This research enables true full-duplex communication, where both sides talk and hear simultaneously. The core trick is canceling a device's own loud echo so it can still hear incoming signals. Think of trying to hear a friend while shouting in a tunnel; we build the anti-echo hearing aid that makes it possible. This significantly improves coordination speed for underwater robots, monitoring stations, and ocean exploration missions.