Channel estimation method under high-speed mobile environment

The invention discloses a channel estimation method under a high-speed mobile environment, which is based on an OFDM (Orthogonal Frequency Division Multiplexing) wireless communication system and pilot frequency. The method comprises the steps that (1), data demodulated by OFDM is mapped by a receiver to form a time-frequency two-dimensional data block to be stored in a matrix form; (2), channel state information corresponding to a pilot frequency point part in a data matrix is computed; and (3), channel state information corresponding to a data part is obtained by using the channel state information corresponding to the pilot frequency point part in the data matrix, and by time-frequency two-dimensional interpolation. With the adoption of the method, a time-frequency double selective channel caused by broadband wireless communication under the high-speed mobile environment can be confronted effectively, and the accuracy of channel estimation can be improved.