OFDM signal receiver and method for receiving OFDM signal

An OFDM signal receiver comprising:

• a first delay section for receiving an analog-to-digital converted OFDM signal as an input and for delaying the OFDM signal by a time corresponding to an effective symbol period Tu of the OFDM signal and outputting the delayed signal;
• a correlation calculating section for outputting a correlation signal showing a correlation between the output of the first delay section and the OFDM signal;
• a second delay section for outputting at least one delayed correlation signal obtained by delaying the correlation signal;
• an adding section for performing addition of the correlation signal and the at least one delayed correlation signal;
• an interval integration section for outputting an integration signal showing a result of transfer integration over a definite interval performed on an output of the adding section;
• a symbol period smoothing section for smoothing the integration signal for an interval of the effective symbol period of the OFDM signal;
• and
• a window position detection section for calculating window position information from an output of the symbol period smoothing section.