Comparison of Sweep Spread Carrier and Frequency Shift Chirp Modulation in Shallow Waters

Citation
Underwater Communications and Networking, UComms 2024
Contribution to Conference
Underwater Communications and Networking, UComms 2024  
Publisher DOI
10.1109/ucomms64662.2024.10847981
Scopus ID
2-s2.0-85218217934
Publisher
IEEE
Chirps or frequency sweeps are widely used in acoustic underwater communication due to their beneficial correlation properties and resilience against Doppler shifts and background noise. We compare sweep spread carrier (S2C) and frequency shift chirp modulation (FSCM), two chirp-based acoustic underwater communication techniques. The evaluation took place in very-shallow water scenarios with static and floating transmission channels. We show that even in scenarios with strong interference, both transmission techniques exhibit a low bit error ratio (BER). Furthermore, we discover the limits of both methods and discuss potential improvements.
DDC Class
600: Technology