Abstract: A channel estimation algorithm was proposed for MIM+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 timcdomain. At the same time the algorithm does not rectuire time domain and frectuency domain transformation, and only a certain number of correlation calculation is needed, so the computation burden is low.

Key words: MIMO-OFDM,Channcl cstimation,Training pattern