信道估计仿真，采用了多种方法：线性插值，MMSE，1惟MMSE,2维MMSE等-Channel Estimation 1 for non-block-wise linear interpolation, 2 for block-wise 1-D MMSE, 3 for non-block-wise 1-D MMSE, 4 for block-wise 2-D MMS

Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and i