An Efficient LMMSE Estimator for MIMOOFDM systems over Flat Fading Channel

Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems play a vital role in the channel estimation. Since all the performance improvement and increase in channel capacity are based on accurate channel state information. A Linear Minimum Mean Square Error (LMMSE) method is proposed for channel estimation over a flat fading channel. From the simulation results we can conclude that the proposed LMMSE algorithm provides better performance in terms of Mean Square Error (MSE) and Bit Error Rate (BER) compared to conventional algorithms.