Residual frequency offset compensation apparatus using phase shift compensation scheme

A residual frequency offset compensation apparatus, comprising:

• a basic phase offset compensation unit compensating a first input symbol using a previously stored basic phase offset and generating a first compensation symbol;
• a phase shift calculation unit calculating a phase shift value of the first compensation symbol using a first detection symbol and the first compensation symbol, the first detection symbol being generated by detecting the first compensation symbol;
• a phase shift compensation unit compensating the first compensation symbol using the phase shift value;
• and
• a basic phase offset update unit updating the basic phase offset based on the phase shift value,
• wherein the basic phase offset compensation unit compensates a second input symbol based on the updated basic phase offset, the second input symbol being different from the first input symbol.