Ofdm signal receiving system

An OFDM signal receiving system for receiving an OFDM signal, comprising:

• a signal receiving unit configured to receive the OFDM signal and to convert the OFDM signal into a baseband OFDM signal;
• a Fourier transform unit configured to perform a Fourier transform on an output of the signal receiving unit;
• a frequency wave operation unit configured to perform a predetermined calculation on a frequency wave signal that is an output of the Fourier transform unit;
• a frequency component extraction unit configured to extract a specific frequency component from an output of the frequency wave operation unit;
• an inverse Fourier transform unit configured to perform an inverse Fourier transform on the frequency component extracted by the frequency component extraction unit;
• a reception quality measurement unit configured to measure quality of an output signal of the inverse Fourier transform unit and generate reception quality data;
• and
• a frequency wave control unit configured to control the frequency wave operation unit based on the reception quality data.