Patent ID: 7864664

Claim:
A delay profile generator comprising: a delay profile generating component that extracts pilot symbols from an OFDM signal in which pilot symbols are scattered among data symbols in a frequency direction and a time direction and which is modulated, and generates, from the extracted pilot symbols, a delay profile representing a time axis distribution of a delay wave; a delay profile extracting component that, by using a delay profile window representing a time position for extracting a necessary delay profile, extracts a delay profile within the window from the delay profile generated by the delay profile generating component; an integrating component that, in the delay profile extracted by the delay profile extracting component, integrates a signal component of a delay profile of a first time period, and integrates a signal component of a delay profile of a second time period that does not overlap the first time period; a comparing component that compares integration values of the two time periods obtained by the integrating component; and a correcting component that corrects a time position of the delay profile window on the basis of results of comparison of the comparing component.