off_synchronization.h

it is a program about ofdm,and it is programed on dsk6455

void Off_Synchronization(short *signal,short *send,short *lfm,short *r,int Signal_len)
{
  int i,j;
  unsigned int N;
  int Num=Fs*Ts;
  double K=B/Ts;
  double sum;
  int max;
  N=ceil((float)Signal_len/(float)Num);
  for(i=0;i<Num;i++)
    {   
      lfm[i]=(int)(cos(2*pi*i*F_start/Fs+pi*K*pow(i,2)/pow(Fs,2))*100);
    }
  for(j=0;j<N;j++)
    { 
      for(i=0;i<Num;i++)
        {   
          signal1[i]=0;
          signal1[i]=(int)signal[i+Num*j]/100;
	    }
      for(i=0;i<Num;i++)
	    {
          sum=0;
	      sum=lfm[i]*signal1[i+j]+sum;
        }
    }
  
  
  




  for(i=0;i<30720;i++)
    {
	  receive[i]=signal[i+3764];
	}
  return;
}