TERAHERTZ COMMUNICATION METHOD THAT IMPROVES TRANSMISSION RATE

The present invention relates to a terahertz communication method that improves the transmission rate. The terahertz communication method is characterized by comprising the following steps: S1, a sending terminal generates a dual-frequency optical wave, and performs data modulation on the dual-frequency optical wave to obtain a dual-frequency optical signal; S2, carrying out photoelectric conversion on the dual-frequency optical signal, generating a terahertz wave through a photon beating process, and extracting a broadband terahertz signal from the obtained terahertz wave; S3, performing multi-dimensional multiplexing and QAM coding modulation on the broadband terahertz signal to obtain a target broadband terahertz signal; S4, sending the target broadband terahertz signal to a receiving terminal by means of a terahertz antenna; and S5: the receiving terminal receives the broadband terahertz signal by using a heterodyne coherent detection method in combination with an optimized DSP algorithm. Compared with th