Underwater wireless communication is a rapidly growing field, especially with the recent emergence of technologies such as autonomous underwater vehicles (AUVs) and remotely operated (ROVs). To support high-bandwidth applications using these technologies, optics has attracted significant attention, alongside its complementary technology - acoustics. In this paper, we propose hybrid opto-acousti...

This paper presents an underwater biomimetic covert acoustic communication system that achieves high covertness and a data rate by mimicking dolphin group whistles. The proposed method uses combined time–frequency shift keying modulation with continuous varying carrier frequency modulation, which mitigates the interference between two overlapping multiple whistles while maintaining rate. bit er...