KRAMERS-KRONIG RECEPTION-BASED THz SIGNAL RECEPTION APPARATUS AND FREQUENCY OFFSET COMPENSATION METHOD USING THE SAME

A method of compensating for a frequency offset performed by a terahertz (THz) signal reception apparatus, the method comprising:

• receiving, from a THz signal transmission apparatus, a THz signal including carrier signals corresponding to three different frequency bands, and converting the THz signal to a digital form;
• extracting, from the THz signal converted to the digital form, a reference carrier included in the THz signal or a sampling clock generated in a process of generating a data signal;
• compensating for a frequency offset generated in a process of transmitting the THz signal by using the extracted reference carrier or sampling clock;
• performing Kramers-Kronig (KK) reception-based digital signal processing on the THz signal for which the frequency offset is compensated;
• and
• performing coherent-based digital signal processing on the THz signal on which the KK reception-based digital signal processing is performed.