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An iterative least square (LS) channel estimation algorithm for MIMO OFDM systems is proposed. Compared with the common LS channel estimation, this algorithm can highly improve the estimation accuracy. Moreover, the low-pass filtering in the time domain reduces AWGN and ICI significantly. This algorithm enables MIMO OFDM systems to work well in mobile situations. Simulation results confirmed good MSE performance of this algorithm.
Date of Conference: 31 May-2 June 2004