Abstract: Abstract： Orthogonal frequency division multiplexing （OFDM） is a crucial technology in channel estimation， this paper proposes an OFDM channel estimation method based on matrix recovery， multiple consecutive OFDM signal in the frequency domain channel is constructed to a channel matrix. Since this channel matrix is low rank， the channel estimation problem can be converted to the weighted truncated kernel norm minimization problem of the channel matrix and the improved Singular Value Thresholding algorithm is used for recovery. The simulation results show that compared with the traditional channel estimation algorithm， the proposed method can use fewer pilot signals when the same precision channel estimation is obtained. Compared with the channel estimation method based on compressed sensing， the proposed method consumes the same amount of pilot frequency but can directly obtain high precision frequency domain estimation of OFDM channel.

Key words: Key words： OFDM, channel estimation, matrix recovery, singular threshold algorithm