OFDM仿真程序，信道估计采用LS,MMSE,LMMSE,DCT等方法，做了个比较，ofdm那个是主程序-OFDM simulation program, channel estimation using LS, MMSE, LMMSE, DCT and so on, made a comparison, ofdm that is the main program

慢衰落信道下基于改进DCT的OFDM系统信道估计方法-In a slow fading channels,a modified DCT based-OFDM system channel estimation method.