Differential chaos shift keying (DCSK) communication method and device based on three-dimensional constellation

A differential chaos shift keying (DCSK) communication device based on three-dimensional constellation, comprising:

• a symbol mapping unit;
• a cyclic shift unit;
• a modulation unit;
• a generating-transmitting unit;
• and
• an information recovery unit;
• wherein the symbol mapping unit is configured to map a target information bit to a three-dimensional constellation symbol;
• the cyclic shift unit is configured to process an initial chaotic signal generated by a chaotic generator by cyclic shift to generate a chaotic signal group, wherein the chaotic signal group comprises the initial chaotic signal, a first shifted chaotic signal and a second shifted chaotic signal;
• the modulation unit is configured to perform an information modulation based on the three-dimensional constellation symbol and the chaotic signal group to obtain an information-bearing signal;
• the generating-transmitting unit is configured to generate a transmission signal based on the information-bearing signal and the initial chaotic signal, and send the transmission signal to a receiver to generate a received signal;
• and
• the information recovery unit is configured to perform an information recovery analysis on the received signal in the receiver to obtain an estimated information bit.