A MIMO-OFDM channel estimation algorithm for high-speed movement environments

This paper presents the channel gain estimation algorithm for the MIMO-OFDM system under the high-speed movement environments. This method aims to achieve robust the MIMO-OFDM channel gain estimation using only the Kalman filter from the canonical state space models with: (a) a state equation composed of the channel gain and the colored driving source, and (b) an observation equation composed of the pilot symbol, the channel gain and the AWGN. The remarkable features of this method are that (i) the channel gain estimation accuracy does not depend on the mobile speed, the number of channel path and the number of transmitting antenna, and that (ii) the proposed method can estimate the channel gain with reduced computational complexity of the traditional. Therefore, this method is the practical MIMO-OFDM channel gain estimation method.