Patent ID: 8391427

Claim:
A channel estimation method in an orthogonal frequency division multiplexing (OFDM) system for receiving a plurality of OFDM symbols and generating channel estimation information, comprising: obtaining a portion of pilot signals from a plurality of pilot signals as a first pilot set according to corresponding positions of the pilot signals in the OFDM symbols, wherein spacing between each pilot signal in the first pilot set is a first relative position; estimating a first estimation factor by calculating correlation coefficients of the pilot signals in the first pilot set in a first direction to obtain the first estimation factor, estimating a second estimation factor by calculating the pilot signals in the first pilot set in a second direction to obtain the second estimation factor, and obtaining a pilot signal estimation result according to the first estimation factor and the second estimation factor; and obtaining the channel estimation information according to the pilot signal estimation result, wherein at least one step of the method is performed by at least one hardware processor.