Underwater acoustic communication system based on filter bank joint sub-carrier multidimensional index modulation and method thereof

An underwater acoustic communication system based on a filter bank joint sub-carrier multidimensional index modulation, comprising a transmitting terminal and a receiving terminal;

• the transmitting terminal includes a prototype pulse index module, a bit shunt, a carrier state index module, a constellation mapping module, a Filter bank multi-carrier (FBMC) block generator and a filter bank modulation module;
• the receiving terminal includes an equalizer, a detector, a decoder and a bit combiner;
• bit input signals are taken as input signals of the prototype pulse index module and input signals of the bit shunt, respectively;
• output signals of the prototype pulse index module are transmitted to the filter bank modulation module;
• output signals of the bit shunt are transmitted to the carrier state index module and the constellation mapping module, respectively;
• output signals of the carrier state index module and output signals of the constellation mapping module are all transmitted to the FBMC block generator;
• output signals of the FBMC block generator are transmitted to the filter bank modulation module;
• output signals of the filter bank modulation module are taken as output signals of the transmitting terminal;
• and
• the output signals of the transmitting terminal are taken as input signals of the equalizer;
• output signals of the equalizer are transmitted to the detector;
• output signals of the detector are transmitted to the decoder, output signals of the decoder are transmitted to the bit combiner, and output signals of the bit combiner are taken as output signals of the receiving terminal.