%?一個OFDM符號128個有效符號，插入128個虛擬子載波
%?符號率（即有效數據率）fsymbol，而發送速率（需要包括虛擬子載波）2fsymbol
%?輸入的數據需要2倍的發送數據率，以便進行內插，實現位定時跟蹤，即4倍fsymbol采樣率的調制信號
%?OFDM?symbol?Nfft=128?points
%?一個OFDM符號數據點?Nfft*2?=?256?，?Guard?Interval點?＝Ng*2=64

%?------------------------------------------------------------------------------------
close?all;
clear;

initializing_now?=?[‘please?wait...‘]

%?------------------------------------------------------------------------------------
%?參數設置

%?系統參數設置
%?FFT點數為256，子載波個數為128，虛擬子載波個數為128
Nfft?=?128;
Ng?=?32;
Ntotal?=?Nfft+Ng;

M_pilot?=?8;?%?每個OFDM符號加入的導頻數目

Max_symbols?=?50;



%?讀取訓練字
%?短訓練字的內容
%?10重復的個短訓練字，每個是一個Guard?Interval的長度
%?可以看成2個重復的長訓練字，每個長訓練字是由5個重復的部分組成的
%?這里讀入的是這樣一個假設的長訓練字的頻域上的值
%?I，Q兩路分別讀入
fid3=fopen（‘data_I_train_word_re_i0_256.txt‘‘r‘）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????41472??2003-12-29?11:04??ofdm仿真程序\程序流程說明.doc
?????文件????????3870??2003-03-14?21:49??ofdm仿真程序\OFDM_rece_matlab\data_I_train_word_1_i0_256.txt
?????文件????????3903??2003-03-14?21:49??ofdm仿真程序\OFDM_rece_matlab\data_I_train_word_2_i0_256.txt
?????文件????????3853??2003-03-16?13:54??ofdm仿真程序\OFDM_rece_matlab\data_I_train_word_re_i0_256.txt
?????文件????????3867??2003-03-14?21:49??ofdm仿真程序\OFDM_rece_matlab\data_Q_train_word_1_i0_256.txt
?????文件????????3908??2003-03-14?21:49??ofdm仿真程序\OFDM_rece_matlab\data_Q_train_word_2_i0_256.txt
?????文件????????3854??2003-03-16?13:54??ofdm仿真程序\OFDM_rece_matlab\data_Q_train_word_re_i0_256.txt
?????文件??????496240??2003-08-02?15:07??ofdm仿真程序\OFDM_rece_matlab\OFDM_mod_I_ser_2up_sam_50.dat
?????文件????????3908??2003-08-02?15:07??ofdm仿真程序\OFDM_rece_matlab\OFDM_mod_original_data_I_ser_2up_sam_50.dat
?????文件????????3895??2003-08-02?15:07??ofdm仿真程序\OFDM_rece_matlab\OFDM_mod_original_data_Q_ser_2up_sam_50.dat
?????文件??????495175??2003-08-02?15:07??ofdm仿真程序\OFDM_rece_matlab\OFDM_mod_Q_ser_2up_sam_50.dat
?????文件???????43884??2005-01-22?16:44??ofdm仿真程序\OFDM_rece_matlab\v06_03_dem_2up_arrange.m
?????文件????????3870??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_I_train_word_1_i0_256.txt
?????文件????????3903??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_I_train_word_2_i0_256.txt
?????文件????????3853??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_I_train_word_re_i0_256.txt
?????文件????????3867??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_Q_train_word_1_i0_256.txt
?????文件????????3908??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_Q_train_word_2_i0_256.txt
?????文件????????3854??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\data_Q_train_word_re_i0_256.txt
?????文件?????????212??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\HBF23.txt
?????文件????????3840??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\I1.txt
?????文件????????3840??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\I2.txt
?????文件????????3840??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\I3.txt
?????文件????????3840??2004-01-02?14:03??ofdm仿真程序\OFDM_send_matlab\I4.txt
?????文件????????8936??2005-01-22?18:58??ofdm仿真程序\OFDM_send_matlab\ofdm_mod.m
?????文件???????92654??2004-01-02?14:07??ofdm仿真程序\OFDM_send_matlab\SoutI_4_BF.txt
?????文件??????185308??2004-01-02?14:07??ofdm仿真程序\OFDM_send_matlab\SoutI_4_IF.txt