Patent ID: 8208568

Claim:
A method of estimating a channel in an orthogonal frequency division multiplexing (OFDM) communication system, the method comprising: sequentially receiving OFDM modulated symbols, wherein each symbol includes pilots and data; placing the pilots included in each of first through n th symbols of the sequentially received symbols in first areas of a memory component used for channel estimation; estimating data in second areas disposed between the first areas of the memory component; and placing the pilots of at least one symbol after the n th symbol of the sequentially received symbols in the first areas and updating the estimated data in the second areas, wherein estimating the data in the second areas comprises: when an arbitrary symbol of the first through n th symbols is an i th symbol (where i is a natural number and 1≦i≦n), receiving the i th symbol and placing pilots included in the i th symbol in the first areas; and estimating the data in the second areas adjacent to the first areas based on the pilots of the i th symbol placed in the first areas and pilots of a symbol previous to the i th symbol.