dvb_t.cpp

该程序是DVB-T系统的1024点的FFT 与 IFFT 代码

// DVB_T.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <math.h>
#include <stdio.h>
#include <iostream.h>

#define N 4

void ifft(double ar[],double ai[]);
void fft(double ar[],double ai[]);

void main()
{
	double ar[4]={1,-1,-1,1};
	double ai[4]={1,1,1,1};
    ifft(ar,ai);
    fft(ar,ai);

    FILE *fp;

    if((fp=fopen("d:\\result.doc","wb+"))==NULL)
	{
		printf("Can not open the file\n");

	}

    for(int i=0;i<N;i++)
    {
        fprintf(fp,"ar[%d]=%f\n",i,ar[i]);
        fprintf(fp,"ai[%d]=%f\n",i,ai[i]);
		
	}
	fclose(fp);
      
}