ssbgen.cpp

三种模拟调制与解调的算法

// SSBGen.cpp: implementation of the SSBGen class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "mod_demod.h"
#include "SSBGen.h"
#include "head.h"
#include "SourceGenClass.h"


#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

SSBGen::SSBGen(CString pnameModel,			CString ptypeModel,
		long	vmodelSampleFreq,	long	vinputSampleFreq,
		int	    vtimeStep,			CString pnameGetDataFile,
		CString	pnamePutDataFile,	double	vampCarrier,
		long	vfreqCarrier,		double	vphaseCarrier,
		double	vModPara):
ModBaseClass(pnameModel,ptypeModel,
		vmodelSampleFreq,	vinputSampleFreq,
		vtimeStep,		    pnameGetDataFile,
		pnamePutDataFile,	vampCarrier,
		vfreqCarrier,		vphaseCarrier,
		vModPara)
{
}


SSBGen::~SSBGen()
{

}
void SSBGen::run()
{
	float   *fn_i,*fn_q;
	double	dt;
	long	num_of_scan;
	long     i;
	dt=1.0/inputSampleFreq;
	num_of_scan=(long) timeStep/1000.0*inputSampleFreq;
	
	
	//产生正交支路的信号
	fn_q=getData(nameGetDataFile,1,num_of_scan);
	if (!fn_q)
	{
		cout<<"when read "<<nameGetDataFile<<",error occured.\n";
		getch();
		exit(1);
	}
    if(!hilbth(fn_q,num_of_scan,"d:\\temp\\temp.dat"))
	{
		cout<<"Error occured when do hilbert transform.\n";
		free(fn_q);
		getch();
		exit(1);
	}
	fn_q=getData("d:\\temp\\temp.dat",1,num_of_scan);
	if(!fn_q)
	{
		cout<<"Error occured when read  temp.dat.\n";
		getch();
		exit(1);
	}
	for(i=0;i<num_of_scan;i++)
		*(fn_q+i)=*(fn_q+i)*sin(2*pi*freqCarrier*i*dt+phaseCarrier);
	
	//产生同相支路的信号
	fn_i=getData(nameGetDataFile,1,num_of_scan);
	if(!fn_i)
	{
		cout<<"when read "<<nameGetDataFile<<",error occured.\n";
		free(fn_i);
		getch();
        exit(1);
	}
	for(i=0;i<num_of_scan;i++)
		*(fn_i+i)=*(fn_i+i)*cos(2*pi*freqCarrier*i*dt+phaseCarrier);
	//正交支路与同相支路相加
	for(i=0;i<num_of_scan;i++)
		*(fn_i+i)+=*(fn_q+i);
	free(fn_q);
	if(putData(fn_i,namePutDataFile,num_of_scan)==FALSE)
	{
		cout<<"Error occured when save the modulate data\n";
	    free(fn_i);
		getch();
		exit(1);
	}
	free(fn_i);
	CFile::Remove("d:\\temp\\temp.dat");
	cout<<"SSB modulate complete\n";
 }