A high-speed digital underwater communication solution using electric current method

The limitations of underwater acoustic communication have been intensively discussed. In this scenario, electric-current communication method is considered as a feasible solution to explore as an alternative to acoustic communication in case of short-range distance. Compared to underwater acoustic communication, electric-current communication method shows its advantages such as fast propagation, high band width and being not prone to noise due to mechanical movement. In this paper, a DSP based underwater modem using electric current method is designed, implemented and evaluated. According to the experiments, error-free communication is possible in a water tank with a data rate of 1Mbps.