Patent ID: 8879380

Claim:
A method for channel estimation used in a receiver of a multi-carrier communication system, including: receiving multi-carrier symbols from a transmitter of the multi-carrier communication system, wherein, data of the multi-carrier symbols is carried by sub-carriers; and obtaining channel information of at least one of the sub-carriers from channel information of at least two scatter pilots of the multi-carrier symbols by selectively using time direction interpolation and frequency direction interpolation, wherein, the time direction interpolation and the frequency direction interpolation are selected according to Doppler frequency and multi-path delay, wherein the frequency direction interpolation is delayed by the same number of multi-carrier symbols as caused by the time direction interpolation; wherein if the Doppler frequency is higher than a first predetermined threshold, and the multi-path delay is lower than a second predetermined threshold, the frequency direction interpolation is selected; otherwise, the time direction interpolation plus the frequency direction interpolation are selected.