Doppler Shift and SFO Robust Synchronization for LoRa-Like Acoustic Underwater Communication
Fabian Steinmetz,
Bernd-Christian Renner
Abstract:Frequency shift chirp modulation (FSCM) is the modulation technique utilized by the LoRa physical layer, a widely used and relatively new communication technique for radio low-power wide area networks (LPWANs). In this paper, we adapt and implement FSCM for low-power acoustic underwater communication. Opposed to over-water communication based on the electromagnetic wave, the acoustic wave in water travels much slower. Therefore, acoustic underwater communication is more sensitive to motion-based Doppler shifts… Show more
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