Patent ID: 7492794

Claim:
A channel estimation method used for a multi-carrier radio transmitting system rendering radio transmission using n sub-carriers, for rendering channel estimation for each sub-carrier, comprising the steps of: a) separating a received signal having a frame configuration comprising the n sub-carrier components including m sub-carrier components into which pilot symbols are inserted, into the respective sub-carrier components, where m≦n; b) using the pilot symbols included in the sub-carrier components obtained through the separation, and rendering channel estimation so as to obtain individual channel estimation results for the respective n sub-carriers; and c) rendering the channel estimation for each target sub-carrier based on the individual channel estimation results for p sub-carriers of the thus-obtained individual channel estimation results for the respective n sub-carriers and relationship between a channel state for the target sub-carrier and a channel state for each of the p sub-carriers, where p≦m.