New Channel Estimation Algorithm in Time-domain for MIMO-OFDM System Based on Training Sequences

A channel estimation algorithm was proposed for MIMO-OFDM system.Estimation criteria and training patterns were given in detail.Due to the correlation of the proposed training patterns,the channel estimation can be acquried conveniently and accurately.The result of both theoretical analysis and simulation shows that the proposed algorithm's performance is as good as the LS algorithm based on optimal training sequences in time-domain.At the same time the algorithm does not require time domain and frequency domain transformation,and only a certain number of correlation calculation is needed,so the computation burden is low.