matlab和modelsim联合仿真

matlab代码：

产生fft输入数据

R=fix(256*(rand(1,64))-128)

fid = fopen('D:\OFDM\ISE_Project\data_re_dec.txt','wt');
fprintf(fid,'%d\n',R);
 fclose(fid);
 complement=zeros(1,64);
for i=1:64
    if(R(i)>=0)
        complement(i)=R(i);
    else
        complement(i)=65536+R(i);
    end
end
fid = fopen('D:\OFDM\ISE_Project\data_re_hex.txt','wt');
fprintf(fid,'%x\n',complement);
 fclose(fid);
 
 
 
R=fix(256*(rand(1,64))-128)
fid = fopen('D:\OFDM\ISE_Project\data_im_dec.txt','wt');
fprintf(fid,'%d\n',R);
 fclose(fid);
 complement=zeros(1,64);
for i=1:64
    if(R(i)>=0)
        complement(i)=R(i);
    else
        complement(i)=65536+R(i);
    end
end
fid = fopen('D:\OFDM\ISE_Project\data_im_hex.txt','wt');
fprintf(fid,'%x\n',complement);

 fclose(fid);

从输入数据文件中读取数据进行fft

 fid = fopen('D:\OFDM\ISE_Project\data_re_dec.txt','r');
 for i=1:64
     data_re(i)=fscanf(fid,'%d',1);
 end
 fclose(fid);
 
  fid = fopen('D:\OFDM\ISE_Project\data_im_dec.txt','r');
 for i=1:64
     data_im(i)=fscanf(fid,'%d',1);
     data(i)=data_re(i)+data_im(i)*j
 end
 fclose(fid);
 
 fft_result=fft(data);

 

 

modelsim部分代码：

reg[15:0]mem_re[0:63];
reg[15:0]mem_im[0:63];

initial 
begin
$readmemh("data_re_hex.txt",mem_re);
$readmemh("data_im_hex.txt",mem_im);
end