Doppler-tolerant underwater communications

Underwater communication is vital for applications like environmental monitoring, marine exploration, and underwater robotics. Real-time communication from autonomous underwater vehicles (AUVs) or bottom nodes to a gateway buoy faces limitations due to channel distortions, notably the Doppler effect induced by relative motion. Signal degradation and communication failures result from these distortions. My research focuses on developing effective communication methods to address these challenges.Traditional packet-by-packet underwater communication requires compensating for signal distortions to ensure accurate information transmission. To achieve this, a portion of the transmitted signal is allocated for training to estimate channel distortion, while the remainder is used for information transmission. The optimization of this allocation, considering time, frequency, and space constraints, forms a crucial aspect of my PhD thesis. This balanced approach can adapt to scenarios with time-varying channel distortions.