quartus11.0 FFT IP核的实现 modelsim仿真通过

quartus11.0 FFT IP核的实现 modelsim仿真通过

% function [y exp_out] = fft_core_model（xNINVERSE）         
%                                                                                           
%   calculates the complex block-floating point FFT/IFFT of length N of a                  
%   complex input vector x                                                                   
%                                                                                            
%   Inputs:   x          : Input complex vector of length B*N where B is                     
%                          the number of blocks over which the length-N FFT is to          
%                          be applied. If the length of the vector is not                    
%                          an integral multiple of N zeros are                               
%                          appended to the input sequence appropriately.                     
%             N          : Transform Length                                                  
%             INVERSE    : FFT direction                                                     
%                          0 => FFT                                                          
%                          1 => IFFT                                                          
%                                                                                          
%   Outputs   y          : The transform-domain complex vector output                        
%             exp_out    : Block exponent value                                               
%                                                                                            
%   2001-2009 Altera Corporation All Rights Reserved 
%                                                                                                  
%   Automatically Generated: FFT MegaCore Function 11.0 Build 208 May 2011                                                                                                   
%
function [y exp_out] = fft_core_model（xNINVERSE） 
addpath（strcat（getenv（‘QUARTUS_ROOTDIR‘）‘/../ip/altera/fft/lib/‘））;
% Parameterization Space   
THROUGHPUT=4;
ARCH=0;
DATA_PREC=8;
TWIDDLE_PREC=8;
input_vector_length = length（x）;                                                              
number_of_blocks = ceil（input_vector_length/N）;                                               
% Zero-stuff last block if necessary                                                          
x = [x zeros（1number_of_blocks * N - input_vector_length）];                                 
y=[];                                                                                         
exp_out=[];                                                                                   
for i=1:number_of_blocks                                                                      
    rin = real（x（（i-1）*N + 1: i*N））;                                                          
    iin = imag（x（（i-1）*N + 1: i*N））;             

 属性            大小     日期    时间   名称
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     目录           0  2015-10-21 10:52  fft_core_test\
     文件        1782  2015-08-21 16:42  fft_core_test\cnt64.bsf
     文件         309  2015-09-02 15:40  fft_core_test\cnt64.v
     文件          71  2015-08-19 20:15  fft_core_test\cnt64.v.bak
     目录           0  2015-10-21 11:00  fft_core_test\db\
     文件        1857  2015-09-02 14:54  fft_core_test\db\add_sub_gnj.tdf
     文件        1857  2015-09-02 14:54  fft_core_test\db\add_sub_mnj.tdf
     文件       24291  2015-09-02 14:54  fft_core_test\db\altsyncram_0tf1.tdf
     文件       22240  2015-09-02 14:54  fft_core_test\db\altsyncram_gku3.tdf
     文件        9528  2015-08-19 20:28  fft_core_test\db\altsyncram_hra1.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_nf91.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_of91.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_pf91.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_sf91.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_tf91.tdf
     文件        9676  2015-09-02 14:54  fft_core_test\db\altsyncram_uf91.tdf
     文件        5918  2015-09-02 14:54  fft_core_test\db\a_dpfifo_po81.tdf
     文件        1815  2015-09-02 14:54  fft_core_test\db\cmpr_gs8.tdf
     文件        2964  2015-09-02 14:54  fft_core_test\db\cntr_ao7.tdf
     文件        2853  2015-09-02 14:54  fft_core_test\db\cntr_tnb.tdf
     文件        2986  2015-09-02 14:54  fft_core_test\db\cntr_unb.tdf
     文件        3225  2015-09-02 14:54  fft_core_test\db\ded_mult_p391.tdf
     文件        1316  2015-09-02 14:54  fft_core_test\db\dffpipe_b3c.tdf
     文件        2397  2015-09-08 20:27  fft_core_test\db\ifft.（0）.cnf.cdb
     文件        1507  2015-09-08 20:27  fft_core_test\db\ifft.（0）.cnf.hdb
     文件        2186  2015-09-10 17:04  fft_core_test\db\ifft.（1）.cnf.cdb
     文件        1345  2015-09-10 17:04  fft_core_test\db\ifft.（1）.cnf.hdb
     文件        2029  2015-09-02 14:54  fft_core_test\db\ifft.（10）.cnf.cdb
     文件         817  2015-09-02 14:54  fft_core_test\db\ifft.（10）.cnf.hdb
     文件        8686  2015-09-02 16:28  fft_core_test\db\ifft.（100）.cnf.cdb
     文件        2984  2015-09-02 16:28  fft_core_test\db\ifft.（100）.cnf.hdb
............此处省略536个文件信息