Patent ID: 8442167

Claim:
A multistage channel estimation method comprising: receiving a data frame to compensate for a distortion of the data frame based on a first channel estimation value associated with a corresponding section of the data frame; changing the corresponding section to calculate a second channel estimation value associated with the changed section; updating the first channel estimation value based on the calculated second channel estimation value; compensating for the distortion of the data frame based on the updated first channel estimation value to count a number of compensations; and repeating the changing, the updating, and the compensating, when the counted number of compensations does not match a predetermined numerical value, wherein a channel estimation is performed in a preamble section of the data frame, wherein the updating comprises: summing up the first channel estimation value and the second channel estimation value to calculate a third channel estimation value; and correcting the calculated third channel estimation value to update the first channel estimation value.