function??[Output_SIM_OFDM_CP?H]=...
????Chan_Rayleigh_SISO_Doppler（TX_Symbols_SIM_OFDM_CPTX_NumRX_Numchanframe_LengthFFT_SizeCP_Size）

%初始化輸出信號與信道矩陣
Output_SIM_OFDM_CP=zeros（RX_Numsize（TX_Symbols_SIM_OFDM_CP2））;
H=zeros（RX_NumTX_Num*FFT_Size）;
??
????????%信號經過多徑信道
????????Output_SIM_OFDM_Sig_RX_TX?=?filter（chan?TX_Symbols_SIM_OFDM_CP.‘）;????????
????????Output_SIM_OFDM_CP=Output_SIM_OFDM_CP+Output_SIM_OFDM_Sig_RX_TX.‘;%得到接收信號
????????%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
????????%根據理想信道估計，得到信道頻率響應
????????%用sinc（）構造離散時間信道模型
????????N=FFT_Size;
????????h_ideal=chan.PathGains;%信道增益
????????tao=chan.PathDelays./chan.InputSamplePeriod;
????????N_1=floor（tao（1））-chan.Chann