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Displaying  Source Code(s)  
 

 
Digital Modulation - ASK, FSK, PSK, QAM Techniques (Main Project)

--------------------------------------------------------------------------------

Description : Digital Modulation Techniques are those echniques through which we convert digital signals into analog signal which can be transmitted through transmission medium...this program demostrate some of the basics techniques

Code :

#include <iostream.h>
#include <conio.h>
#include <math.h>
#include <graphics.h>
#include <process.h>
#include <dos.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define tcpath "d:\tc\bgi"
#define yvalue 180
#define yvalue2 300
#define lineweight 3
#define bdweight 10
#define pi 3.1415
//////////////////////
int main_c_hz=90, main_c_amplitude=15, main_sr =2000;
float main_c_frequency;
int main_c_angle=90;
int main_c_phase;
int main_c_lcycle=200,main_temp;
float main_c_sine_value[1000];
///////////////////////////////////
char bd_4main[20]="101011101";
int y1=yvalue-20,x1=200,y2=yvalue;
////////////////////////////////////carrier signal values
char bd_4signal[9];
int y12=yvalue2-40,x12=40,y22=yvalue2;
int c_hz=20, c_amplitude=25, sr =4000;
float c_frequency;
int c_angle;
int c_phase;
int c_lcycle=400,temp;
float c_sine_value[1000];
////////////////////////////////////carrier 4 qam
char bd_4qam[25];
////////////////////////////////////
struct ASK
{
float frequency,sine_value[1000];
int phase;
int amp0,amp1;
int x;
int noiseVal;
}ask;
int ask_sr=700,ask_lcycle=70;
///////////////////////////////////
struct FSK
{
float sine_value[1000];
int hz0,hz1;
int phase;
int amp;
int x;
}fsk;
int fsk_sr=700,fsk_lcycle=70;
///////////////////////////////////
struct PSK
{
float sine_value[1000];
float frequency;
int ang1,ang0;
int phase0,phase1;
int amp;
int x;
}psk;
int psk_sr=700,psk_lcycle=70;
///////////////////////////////////
struct QAM
{
float sine_value[1000];
float frequency;
int ang1,ang2,ang3,ang4;
int phase1,phase2,phase3,phase4;
int amp1,amp2;
int x;
}qam;
int qam_sr=700,qam_lcycle=70;
///////////////////////////////////
void initialgraph(void);
void mainpage(void);
void createmenu(void);
////////////////////////////////////
void creategraph_4main(void);
void createDsignal_4main(void);
void dsignal4_0_4main(int);
void dsignal4_1_4main(int);
void calc_sinewave_4main();
void create_simple_wave_4main();
void create_analoggraph_4main();
///////////////////////////////////
void askHandler(void);
void fskHandler(void);
void pskHandler(void);
void qamHandler(void);
void helpHandler(void);
void exitHandler(void);
/////////////////////////////
void carrierDataBox();
int carrierInputFun();
void askDataBox();
int askInputFun();
void fskDataBox();
int fskInputFun();
void pskDataBox();
int pskInputFun();
void qamDataBox();
int qamInputFun();
void graphicText(int x,int y,char ch);
////////////////////////////////
void calc_sinewave();
void view_data();
void create_simple_wave();
void create_graph();
void show_int_graph(int val,int l,int x,int y);
void creategraph_digital(void);
void createDsignal_digital(void);
void dsignal4_0_digital(int);
void dsignal4_1_digital(int);
/////////////////////////////
void calc_ask_sinewave(int);
void calc_askN_sinewave(int);
void ask_main();
void askN_main();
void create_ask_waves();
void create_graph_ask();
/////////////////////////////
void calc_fsk_sinewave(int);
void fsk_main();
void create_fsk_waves();
void create_graph_fsk();
/////////////////////////////
void calc_psk_sinewave(int);
void psk_main();
void create_psk_waves();
void create_graph_psk();
/////////////////////////////
void carrierDataBox_4qam();
int carrierInputFun_4qam();
void showDtable();
void creategraph_Dqam(void);
void createDsignal_Dqam(void);
void dsignal4_0_Dqam(int);
void dsignal4_1_Dqam(int);
void calc_qam_sinewave(int,int);
void qam_main();
void create_qam_waves();
void create_graph_qam();
void showDtable2();
/////////////////////////////
void main()
{
initialgraph();
mainpage();
}
/////////////////////////////
void initialgraph()
{
int gd=DETECT, gm;
initgraph(&gd, &gm, tcpath);
}
/////////////////////////////
void mainpage()
{
y1=yvalue-20;x1=200;y2=yvalue;
setfillstyle(1,1);
bar(70,20,570,22);
bar(70,65,570,67);
setfillstyle(1,9);
bar(70,22,570,64);
setcolor(15);
settextstyle(7,0,4);
outtextxy(80,20,"Digital to Analog Modulation");
setfillstyle(1,1);
bar(190-2,120-2,410+2,190+2);
bar(190-2,310-2,410+2,390+2);
setcolor(1);
setfillstyle(1,9);
bar(190,120,410,190);
bar3d(248,230,333,275,10,1);
bar(190,310,410,390);
setfillstyle(1,1);
bar(295,194,305,220);
bar(295,277,305,305);
setcolor(15);
settextstyle(2,0,4);
outtextxy(252,240,"Digital/Analog");
outtextxy(252,252," Modulation");
creategraph_4main();
createDsignal_4main();
calc_sinewave_4main();
create_simple_wave_4main();
create_analoggraph_4main();
setfillstyle(1,1);
bar(460-2,240-2,520+2,265+2);
bar(460-2,160-2,520+2,185+2);
bar(460-2,320-2,520+2,345+2);
setcolor(1);
setlinestyle(1,1,9);
line(344,252,458,252);
line(440,172,440,333);
line(440,172,460,172);
line(440,333,460,333);
line(540,172,540,333);
line(520,172,540,172);
line(520,333,540,333);
line(540,252,560,252);
bar(560-2,240-2,620+2,265+2);
setfillstyle(1,9);
bar(460,240,520,265);
bar(460,160,520,185);
bar(460,320,520,345);
bar(560,240,620,265);
setcolor(15);
settextstyle(2,0,5);
outtextxy(480,165,"ASK");
outtextxy(480,245,"FSK");
outtextxy(480,325,"PSK");
outtextxy(580,245,"QAM");
createmenu();
//getch();
}
////////////////////////////
void createmenu()
{
setfillstyle(1,8);
bar(3,117,110,248);
setfillstyle(1,1);
bar(1,117,107,245);
setfillstyle(1,9);
bar(4,120,104,242);
setfillstyle(1,1);
bar(1,120,107,122);
bar(1,140,107,142);
bar(1,160,107,162);
bar(1,180,107,182);
bar(1,200,107,202);
bar(1,220,107,222);
bar(1,240,107,242);
setcolor(15);
settextstyle(2,0,5);
outtextxy(38,122,"ASK");
outtextxy(38,142,"FSK");
outtextxy(38,162,"PSK");
outtextxy(38,182,"QAM");
outtextxy(38,202,"ABOUT-US");
outtextxy(38,222,"EXIT");
int x=4,y=124;
int choice=1;
setfillstyle(1,15);
setcolor(9);
bar(x,y,x+100,y+19-4);
outtextxy(38,122,"ASK");
char ch;
setfillstyle(1,1);
bar(1,441,639,444);
bar(1,476,639,479);
setfillstyle(1,9);
bar(1,445,639,475);
while(1)
{
//getch();
switch (choice)
{
case 1:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"Amplitude Shift Keying Technique");break;
}
case 2:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"Frequency Shift Keying Technique");break;
}
case 3:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"Phase Shift Keying Technique");break;
}
case 4:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"QAM");break;
}
case 5:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"Team profile and contact");break;
}
case 6:
{
setcolor(15);
setfillstyle(1,9);bar(1,445,639,475);
outtextxy(10,450,"Exit");break;
}

}
setfillstyle(1,9);
setcolor(15);
switch(getch())
{
case 80: {if (choice == 6)choice=1;else choice+=1;break;}
case 72: {if (choice == 1)choice=6;else choice-=1;break;}
//case '0': exit(0);
case '
':
{
if (choice == 1) askHandler(); else
if (choice == 2) fskHandler(); else
if (choice == 3) pskHandler(); else
if (choice == 4) qamHandler(); else
if (choice == 5) helpHandler();else
if (choice == 6) exit(0);//exitHandler();
}
}
if (choice == 1)
{
bar(x,y+(19*5),x+100,y+(19*6));outtextxy(38,222,"EXIT");
bar(x,y+19,x+100,y+(19*2));outtextxy(38,142,"FSK");
}
if (choice == 2)
{
bar(x,y,x+100,y+19);outtextxy(38,122,"ASK");
bar(x,y+(19*2),x+100,y+(19*3));outtextxy(38,162,"PSK");
}
if (choice == 3)
{
bar(x,y+19,x+100,y+(19*2));outtextxy(38,142,"FSK");
bar(x,y+(19*3),x+100,y+(19*4));outtextxy(38,182,"QAM");
}
if (choice == 4)
{
bar(x,y+(19*2),x+100,y+(19*3));outtextxy(38,162,"PSK");
bar(x,y+(19*4),x+100,y+(19*5));outtextxy(38,202,"ABOUT-US");
}
if (choice == 5)
{
bar(x,y+(19*3),x+100,y+(19*4));outtextxy(38,182,"QAM");
bar(x,y+(19*5),x+100,y+(19*6));outtextxy(38,222,"EXIT");
}
if (choice == 6)
{
bar(x,y+(19*4),x+100,y+(19*5));outtextxy(38,202,"ABOUT-US");
bar(x,y,x+100,y+19);outtextxy(38,122,"ASK");
}

setfillstyle(1,15);
setcolor(9);
if (choice == 1)
{
bar(x,y,x+100,y+19);outtextxy(38,122,"ASK");
}
if (choice == 2)
{bar(x,y+19,x+100,y+(19*2));outtextxy(38,142,"FSK");}
if (choice == 3)
{bar(x,y+(19*2),x+100,y+(19*3));outtextxy(38,162,"PSK");}
if (choice == 4)
{bar(x,y+(19*3),x+100,y+(19*4));outtextxy(38,182,"QAM");}
if (choice == 5)
{bar(x,y+(19*4),x+100,y+(19*5));outtextxy(38,202,"ABOUR-US");}
if (choice == 6)
{bar(x,y+(19*5),x+100,y+(19*6));outtextxy(38,222,"EXIT");}
setfillstyle(1,1);
bar(1,120,107,122);
bar(1,140,107,142);
bar(1,160,107,162);
bar(1,180,107,182);
bar(1,200,107,202);
bar(1,220,107,222);
bar(1,240,107,242);
}
}
////////////////////////////////////////////////
void creategraph_4main()
{
int cgx1=200,cgy1=130, cgx2=400,cgy2=yvalue;
setcolor(15);
setlinestyle(0,1,3);
line(cgx1,cgy1,cgx1,cgy2);
line(cgx1,cgy2,cgx2,cgy2);
setcolor(8);
setlinestyle(1,1,1);
for(int i = cgx1+20; i<cgx2;i+=20)
line(i,cgy1,i,cgy2);
//getch();
}
/////////////////////////////////////////////////////
void createDsignal_4main()
{
setcolor(1);
int len=strlen(bd_4main);
for (int i=0;i<len-1;i++)
{
if(bd_4main[i] == '0')
{
dsignal4_0_4main(i+1);
}
else
{
dsignal4_1_4main(i+1);
}
}
}
//////////////////////////////////////////////////////
void dsignal4_0_4main(int pos)
{
setcolor(1);
setlinestyle(0,1,lineweight);
int x=x1;x1+=20;
if (pos == 1 || (pos != 1 && bd_4main[pos-2] == '0'))
line(x,y2,x+20,y2);
else
{
line(x,y1,x,y2);
line(x,y2,x+20,y2);
}
}
///////////////////////////////////////////////////////
void dsignal4_1_4main(int pos)
{
setcolor(1);
setlinestyle(0,1,lineweight);
int x=x1;x1+=20;
if (pos == 1 || (pos != 1 && bd_4main[pos-2] == '1'))
line(x,y1,x+20,y1);
else
{
line(x,y1,x,y2);
line(x,y1,x+20,y1);
}
}
///////////////////////////////////////////////////////
void calc_sinewave_4main()
{
main_c_frequency = (2 * pi * main_c_hz)/main_sr;
for (int t = 0; t<main_c_lcycle;t++)
main_c_sine_value[t] = main_c_amplitude * (sin((main_c_frequency*t)+
main_c_phase));
}
/////////////////////////////
void create_analoggraph_4main()
{
setcolor(15);
line(200,350,400,350);
line(200,320,200,380);
}
/////////////////////////////
void create_simple_wave_4main()
{
int x=200,y=350,x1,y1;
setcolor(1);
setlinestyle(0,0,3);
for(int i=0;i<main_c_lcycle;i++)
{
x1=x+i;
if(main_c_sine_value[i] >= 0)
y1=y-main_c_sine_value[i];
else
y1=y+((-1)*main_c_sine_value[i]);
line(x1,y1,x1,y1);
}
}
///////////////////////////////////
void askHandler(void)
{
int z;
do{
setcolor(15);
carrierDataBox();
z=carrierInputFun();
}while(z != 1);
do{
setcolor(15);
askDataBox();
z=askInputFun();
}while(z != 1);
cleardevice();
/////////////////////digital part
creategraph_digital();
createDsignal_digital();
getch();
cleardevice();
/////////////////////carrier signal
calc_sinewave();
create_simple_wave();
create_graph();
getch();
cleardevice();
/////////////////////askpart
create_graph_ask();
outtextxy(30,300,"Signal Without Noise ");
ask_main();
getch();
cleardevice();
if(ask.noiseVal == -1)
mainpage();
else
/////////////////////askpart with noise
{create_graph_ask();
outtextxy(30,300,"Signal With Noise ");
askN_main();
getch();
cleardevice();
mainpage();
}
exit(0);
}
///////////////////////////////////
void fskHandler(void)
{
int z;
do{
setcolor(15);
carrierDataBox();
z=carrierInputFun();
}while(z != 1);
do{
setcolor(15);
fskDataBox();
z=fskInputFun();
}while(z != 1);
cleardevice();
/////////////////////digital part
creategraph_digital();
createDsignal_digital();
getch();
cleardevice();
/////////////////////carrier signal
calc_sinewave();
create_simple_wave();
create_graph();
getch();
cleardevice();
/////////////////////fskpart
create_graph_fsk();
fsk_main();
getch();
cleardevice();
mainpage();
//exit(0);
}
///////////////////////////////////
void pskHandler(void)
{
int z;
do{
setcolor(15);
carrierDataBox();
z=carrierInputFun();
}while(z != 1);
do{
setcolor(15);
pskDataBox();
z=pskInputFun();
}while(z != 1);
cleardevice();
/////////////////////digital part
creategraph_digital();
createDsignal_digital();
getch();
cleardevice();
/////////////////////carrier signal
calc_sinewave();
create_simple_wave();
create_graph();
getch();
cleardevice();
/////////////////////pskpart
create_graph_psk();
psk_main();
getch();
cleardevice();
mainpage();
//exit(0);
}
///////////////////////////////////
void qamHandler(void)
{
int z;
do{
setcolor(15);
carrierDataBox_4qam();
z=carrierInputFun_4qam();
}while(z != 1);
do{
setcolor(15);
qamDataBox();
z=qamInputFun();
showDtable();
getch();
}while(z != 1);
cleardevice();
/////////////////////digital part
creategraph_Dqam();
createDsignal_Dqam();
getch();
cleardevice();
/////////////////////carrier signal
calc_sinewave();
create_simple_wave();
create_graph();
getch();
cleardevice();
/////////////////////qampart
create_graph_qam();
qam_main();
showDtable2();
getch();
cleardevice();
mainpage();
}
///////////////////////////////////
void helpHandler(void)
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,370+4);
setfillstyle(1,15);
bar(140,100,634,370);
setfillstyle(1,9);
bar(142,102,632,120);
settextstyle(2,0,4);
outtextxy(145,104,"Team Profile");
setcolor(1);
outtextxy(145,120+10,"Course Instructor ");
outtextxy(145,130+10,"----------------- ");
setcolor(9);
outtextxy(145,150+10,"Kamran Ishaq Kukda");
setcolor(1);
outtextxy(145,170+10,"Team Leader ");
outtextxy(145,180+10,"----------------- ");
setcolor(9);
outtextxy(145,200+10,"Arsalan Akhtar ");
outtextxy(145,210+10,"[ arsalan.akhtar@gmail.com ]");
setcolor(1);
outtextxy(145,230+10,"Team Members ");
outtextxy(145,240+10,"----------------- ");
setcolor(9);
outtextxy(145,260+10,"Jawaid Iqbal Bhatti");
outtextxy(145,270+10,"[ jawaid85@hotmail.com ]");
outtextxy(145,290+10,"Kumail Haider");
outtextxy(145,300+10,"[ kumi_here@hotmail.com ]");
outtextxy(145,320+10,"Jibran Sabhi");
outtextxy(145,330+10,"[ j_4_jibs@hotmail.com ]");
getch();
setfillstyle(1,0);
bar(130,80,639,440);
mainpage();
}
///////////////////////////////////
void exitHandler(void)
{
cleardevice();
outtextxy(10,10,"exit");
getch();
closegraph();
}
///////////////////////////////////
void carrierDataBox()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,270+4);
setfillstyle(1,15);
bar(140,100,634,270);
setfillstyle(1,9);
bar(142,102,632,120);
settextstyle(2,0,4);
outtextxy(145,104,"Enter 8 bits (1byte)");
setfillstyle(1,8);
bar(142,130,318,162);
setfillstyle(1,1);
bar(144,132,316,160);
setfillstyle(1,15);
int xabc=150,yabc=134,xxyz,yxyz=158;
for(int i=0;i<=7;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,180,632,198);
outtextxy(145,182,"Carrier Signal Information");
bar(142,204,220,222);
outtextxy(145,206,"Amplitude");
setfillstyle(1,8);
bar(225,204,272,222);
setfillstyle(1,1);
bar(227,206,270,220);
setfillstyle(1,15);
xabc=230,yabc=208,xxyz,yxyz=218;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,224,220,242);
outtextxy(145,226,"Frequency");
setfillstyle(1,8);
bar(225,224,272,242);
setfillstyle(1,1);
bar(227,226,270,240);
setfillstyle(1,15);
xabc=230,yabc=228,xxyz,yxyz=238;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,244,220,262);
outtextxy(145,246,"Phase");
setfillstyle(1,8);
bar(225,244,292,262);
setfillstyle(1,1);
bar(227,246,290,260);
setfillstyle(1,15);
xabc=230,yabc=248,xxyz,yxyz=258;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,244,550,262);
setfillstyle(1,9); //inner
bar(500+2,244+2,550-2,262-2);
setfillstyle(1,1);
bar(560,244,610,262);
setfillstyle(1,9); //inner
bar(560+2,244+2,610-2,262-2);
outtextxy(510,247,"Reset");
outtextxy(570,247,"Apply");
}
////////////////////////////////////////////////
int carrierInputFun()
{
/////////////////////////////////digit
int x1=150,x2=150,y1=134,y2=158;
int i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
bd_4signal[i-1] = getche();
if(bd_4signal[i-1] != '0' && bd_4signal[i-1] != '1')
{i-=1;x2-=20;}
graphicText(x1+4,y1+6,bd_4signal[i-1]);
if(i == 8)break;
x1=x2+2;
}while(1);
bd_4signal[8]='/0';
/////////////////////////////////amplitude
x1=230,x2=230,y1=208,y2=218;
char t_afp[2];
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
c_amplitude = atoi(t_afp);
//////////////////////////////////////////frequency
x1=230,x2=230,y1=228,y2=238;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
c_hz = atoi(t_afp);
//////////////////////////////////////////phase
x1=230,x2=230,y1=248,y2=258;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
c_angle = atoi(t_afp);
/////////////////////////////////////////////////
c_hz*=10;
c_phase = c_angle*(2*pi/360);
/////////////////////////////////////////////////button
int choice=0; //0 done 1 reset
//x1=502;y1=246;x2=548;y2=260;
x1=562;y1=246;x2=608;y2=260;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,247,"Reset");
outtextxy(570,247,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=246;x2=608;y2=260;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,247,"Apply")
;
choice=1;x1=502;y1=246;x2=548;y2=260;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,247,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=246;x2=608;y2=260;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,247,"Apply")
;
choice=0;x1=502;y1=246;x2=548;y2=260;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,247,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
}
///////////////////////////////////////////////
void askDataBox()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,220+4);
setfillstyle(1,15);
bar(140,100,634,220);
setfillstyle(1,9);
bar(142,102,632,120);
setcolor(15);
settextstyle(2,0,4);
outtextxy(145,104,"Amplitude Shift Keying (ASK) Information");
bar(142,124,320,142);
outtextxy(145,126,"On/Off Keying Technique (OOK)");
setfillstyle(1,8);
bar(332,124,358,144);
setfillstyle(1,1);
bar(334,126,356,142);
setfillstyle(1,15);
int xabc=336,yabc=128,xxyz,yxyz=140;
for(int i=0;i<=0;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,146,320,164);
outtextxy(145,146,"Amplitude for 0 bit");
setfillstyle(1,8);
bar(332,144,379,164);
setfillstyle(1,1);
bar(334,146,377,162);
setfillstyle(1,15);
xabc=336,yabc=148,xxyz,yxyz=160;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,166,320,184);
outtextxy(145,166,"Amplitude for 1 bit");
setfillstyle(1,8);
bar(332,164,379,184);
setfillstyle(1,1);
bar(334,166,377,182);
setfillstyle(1,15);
xabc=336,yabc=168,xxyz,yxyz=180;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,186,320,204);
outtextxy(145,188,"Noisy Enviornment");
setfillstyle(1,8);
bar(332,184,358,202);
setfillstyle(1,1);
bar(334,186,356,200);
setfillstyle(1,15);
xabc=336,yabc=188,xxyz,yxyz=198;
for(i=0;i<=0;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,184,550,204);
setfillstyle(1,9); //inner
bar(500+2,184+2,550-2,204-2);
setfillstyle(1,1);
bar(560,184,610,204);
setfillstyle(1,9); //inner
bar(560+2,184+2,610-2,204-2);
outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
}
///////////////////////////////////////////////
int askInputFun()
{
ask.frequency = c_frequency;
ask.phase = c_phase;
int x1=336,y1=128,x2=354,y2=140;
char ookCheck,t_afp[2];
/////////////////////////////////ook check
int i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
ookCheck = getche();
if(ookCheck != 'n' && ookCheck != 'N' && ookCheck != 'Y' && ookCheck !=
'y')
{i-=1;x2-=20;}
graphicText(x1+6,y1,ookCheck);
if(i == 1)break;
x1=x2+2;
}while(1);
////////////////////////////////amp0
x1=336;x2=354;y1=148;y2=160;
if (ookCheck=='y' || ookCheck=='Y')
{
ask.amp0 = 0;
setfillstyle(1,9);
bar(x1,y1,x2,y2);
bar(x1+20,y1,x2+20,y2);
graphicText(x1+6,y1,'0');
graphicText(x1+20+6,y1,'0');
}
else
{
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
ask.amp0=atoi(t_afp);
}
///////////////////////////////////////////////////amp1
x1=336;x2=354;y1=168;y2=180;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
ask.amp1=atoi(t_afp);
/////////////////////////////////////////////////
x1=336;x2=354;y1=188;y2=198;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
ookCheck = getche();
if(ookCheck != 'n' && ookCheck != 'N' && ookCheck != 'Y' && ookCheck !=
'y')
{i-=1;x2-=20;}
graphicText(x1+6,y1,ookCheck);
if(i == 1)break;
x1=x2+2;
}while(1);
if (ookCheck=='y' || ookCheck=='Y')
ask.noiseVal=ask.amp1;
else
ask.noiseVal=-1;
/////////////////////////////////////////////////
int choice=0; //0 done 1 reset
//x1=502;y1=186;x2=548;y2=200;
x1=562;y1=186;x2=608;y2=202;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=1;x1=502;y1=186;x2=548;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=0;x1=502;y1=186;x2=548;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
/*getch();
closegraph();
cout<<ookCheck<<"<BR><<ask.amp0<<"<BR><<ask.amp1<<"<BR><<ask.noiseVal;
getch();
exit(0);
*/
}
///////////////////////////////////////////////
void graphicText(int x,int y,char ch)
{
switch(ch)
{
case '0':outtextxy(x,y,"0");break;
case '1':outtextxy(x,y,"1");break;
case '2':outtextxy(x,y,"2");break;
case '3':outtextxy(x,y,"3");break;
case '4':outtextxy(x,y,"4");break;
case '5':outtextxy(x,y,"5");break;
case '6':outtextxy(x,y,"6");break;
case '7':outtextxy(x,y,"7");break;
case '8':outtextxy(x,y,"8");break;
case '9':outtextxy(x,y,"9");break;
case 'n':outtextxy(x,y,"N");break;
case 'N':outtextxy(x,y,"N");break;
case 'y':outtextxy(x,y,"Y");break;
case 'Y':outtextxy(x,y,"Y");break;
case '-':outtextxy(x,y,"-");break;

}
}
/////////////////////////////////////////////////////
void calc_sinewave()
{
c_frequency = (2 * pi * c_hz)/sr;
for (int t = 0; t<c_lcycle;t++)
c_sine_value[t] = c_amplitude * (sin((c_frequency*t)+ c_phase));
}
/////////////////////////////
void view_data()
{
clrscr();
for (int t = 0,j=0; t<c_lcycle;t++,j++)
{
if(j==20){getch();j=0;}
cout<<c_sine_value[t]<<"<BR>;
}
getch();
}
/////////////////////////////
void create_graph()
{
int csx1=40,csy1=100, csx2=600,csy2=300;
setcolor(14);
show_int_graph(c_amplitude,2,csx1-25,csy2-csy1-c_amplitude-5);
show_int_graph(((-1)*c_amplitude),3,csx1-30,csy2-csy1+c_amplitude-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-c_amplitude,csx1+4,csy2-csy1-c_amplitude);
line(csx1-4,csy2-csy1+c_amplitude,csx1+4,csy2-csy1+c_amplitude);
setcolor(15);
setlinestyle(1,1,1);
line(csx1+6,csy2-5,csx1+c_lcycle-6,csy2-5);
outtextxy(csx1+3,csy2-11,"<");
outtextxy(csx1+c_lcycle-3,csy2-11,">");
outtextxy((csx2/2)-80,csy2+5,"1 sec");
setlinestyle(0,0,3);
setcolor(4);
line(csx1,csy1,csx1,csy2);
line(csx1,csy2-csy1,csx2,csy2-csy1);
setcolor(9);
setlinestyle(1,1,1);
for(int i = csx1+c_lcycle; i<csx2;i+=c_lcycle)
line(i,csy1,i,csy2);
outtextxy(csx1,csy2+100,"Amplitude = ");
outtextxy(csx1,csy2+120,"Frequency = ");
outtextxy(csx1,csy2+140,"Phase = ");
setcolor(15);
show_int_graph(c_amplitude,2,csx1+80,csy2+100);
show_int_graph(c_hz/10,2,csx1+80,csy2+120);
show_int_graph(c_angle,3,csx1+80,csy2+140);
settextstyle(1,0,4);
setcolor(15);
outtextxy(csx1,30,"CARRIER SIGNAL");
setfillstyle(1,9);
bar(csx1,70,csx1+250,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,460,"Press any key to continue");
//getch();
}
/////////////////////////////
void create_simple_wave()
{
int x=40,y=200,x1,y1;
setcolor(2);
setlinestyle(0,0,3);
for(int i=0;i<c_lcycle;i++)
{
x1=x+i;
if(c_sine_value[i] >= 0)
y1=y-c_sine_value[i];
else
y1=y+((-1)*c_sine_value[i]);
line(x1,y1,x1,y1);
}
}
/////////////////////////////////
void show_int_graph(int val,int l,int x,int y)
{
char temp[10];
itoa(val,temp,10);
for(int i=0;i<l;i++)
{
x+=6;
graphicText(x,y,temp[i]);
}
}
////////////////////////////////////////////////////
void creategraph_digital()
{
y12=yvalue2-40,x12=40,y22=yvalue2;
int cgx1=40,cgy1=140, cgx2=500,cgy2=yvalue2;
setcolor(4);
setlinestyle(0,1,3);
line(cgx1,cgy1,cgx1,cgy2);
line(cgx1,cgy2,cgx2,cgy2);
setcolor(14);
setlinestyle(1,1,1);
for(int i = cgx1+40; i<cgx2;i+=40)
line(i,cgy1,i,cgy2);
settextstyle(1,0,4);
setcolor(15);
outtextxy(x12,30,"DIGITAL SIGNAL");
setfillstyle(1,9);
bar(x12,70,x12+250,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,460,"Press any key to continue");
int a=52,b=100;
for(i=0;i<=7;i++)
{
setcolor(15);
graphicText(a,y22-100,bd_4signal[i]);
setcolor(15);
graphicText(b,400,bd_4signal[i]);
a+=40;b+=7;
}
setcolor(9);
outtextxy(40,400,"Data = ");

//getch();
}
/////////////////////////////////////////////////////
void createDsignal_digital()
{
setcolor(2);
int len=9;
for (int i=0;i<len-1;i++)
{
if(bd_4signal[i] == '0')
{
dsignal4_0_digital(i+1);
}
else
{
dsignal4_1_digital(i+1);
}
}
}
//////////////////////////////////////////////////////
void dsignal4_0_digital(int pos)
{
setcolor(2);
setlinestyle(0,1,lineweight);
int x=x12;x12+=40;
if (pos == 1 || (pos != 1 && bd_4signal[pos-2] == '0'))
line(x,y22,x+40,y22);
else
{
line(x,y12,x,y22);
line(x,y22,x+40,y22);
}
}
///////////////////////////////////////////////////////
void dsignal4_1_digital(int pos)
{
setcolor(2);
setlinestyle(0,1,lineweight);
int x=x12;x12+=40;
if (pos == 1 || (pos != 1 && bd_4signal[pos-2] == '1'))
line(x,y12,x+40,y12);
else
{
line(x,y12,x,y22);
line(x,y12,x+40,y12);
}
}
///////////////////////////////////////////////////////
void calc_ask_sinewave(int amp01)
{
ask.frequency = (2 * pi * c_hz)/ask_sr;
for (int t = 0; t<ask_lcycle;t++)
ask.sine_value[t] = amp01 * (sin((ask.frequency*t)+ ask.phase));
}
////////////////////////////////////////////////////////
void calc_askN_sinewave(int amp01)
{
randomize();
ask.frequency = (2 * pi * c_hz)/ask_sr;
int namp=random(amp01);
for (int t = 0,n=0; t<ask_lcycle;t++,n++)
{
if(n==1){namp=amp01+random(8);n=0;}
ask.sine_value[t] = namp * (sin((ask.frequency*t)+ ask.phase));
}
}

//////////////////////////////////
void ask_main()
{
ask.x=32;
for (int i = 0;i<8;i++)
{
if (bd_4signal[i] == '0')
{
calc_ask_sinewave(ask.amp0);
create_ask_waves();
}
else
{
calc_ask_sinewave(ask.amp1);
create_ask_waves();
}
}
}
////////////////////////////////////////////////////
void askN_main()
{
ask.x=32;
for (int i = 0;i<8;i++)
{
if (bd_4signal[i] == '0')
{
calc_askN_sinewave(ask.amp0);
create_ask_waves();
}
else
{
calc_askN_sinewave(ask.amp1);
create_ask_waves();
}
}
}

////////////////////////////////////////////////////
void create_ask_waves()
{
int y=200,x1,y1;
setcolor(2);
setlinestyle(0,0,3);
for(int i=0;i<ask_lcycle;i++)
{
x1=ask.x+i;
if(ask.sine_value[i] >= 0)
y1=y-ask.sine_value[i];
else
y1=y+((-1)*ask.sine_value[i]);
line(x1,y1,x1,y1);
}
ask.x=x1;
}
///////////////////////////////////////////////////////
void create_graph_ask()
{
int csx1=30,csy1=100, csx2=620,csy2=300;
setcolor(15);
show_int_graph(ask.amp0,2,csx1-25,csy2-csy1-ask.amp0-5);
show_int_graph(((-1)*ask.amp0),3,csx1-30,csy2-csy1+ask.amp0-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-ask.amp0,csx1+4,csy2-csy1-ask.amp0);
line(csx1-4,csy2-csy1+ask.amp0,csx1+4,csy2-csy1+ask.amp0);
show_int_graph(ask.amp1,2,csx1-25,csy2-csy1-ask.amp1-5);
show_int_graph(((-1)*ask.amp1),3,csx1-30,csy2-csy1+ask.amp1-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-ask.amp1,csx1+4,csy2-csy1-ask.amp1);
line(csx1-4,csy2-csy1+ask.amp1,csx1+4,csy2-csy1+ask.amp1);
setcolor(4);
setlinestyle(0,0,3);
line(csx1,csy1,csx1,csy2);
line(csx1,csy2-csy1,csx2,csy2-csy1);
setcolor(9);
setlinestyle(1,1,1);
for(int i = csx1+ask_lcycle; i<csx2;i+=ask_lcycle-1)
line(i,csy1,i,csy2);
outtextxy(csx1,csy2+100,"Amplitude for 0 = ");
outtextxy(csx1,csy2+120,"Amplitude for 1 = ");
outtextxy(csx1,csy2+140,"Frequency = ");
outtextxy(csx1,csy2+160,"Phase = ");
setcolor(15);
show_int_graph(ask.amp0,2,csx1+160,csy2+100);
show_int_graph(ask.amp1,2,csx1+160,csy2+120);
show_int_graph(c_hz/10,2,csx1+160,csy2+140);
show_int_graph(c_angle,3,csx1+160,csy2+160);
settextstyle(1,0,4);
setcolor(15);
outtextxy(csx1,30,"Amplitude Shift Keying");
setfillstyle(1,9);
bar(csx1,70,csx1+370,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,468,"Press any key to continue");
int a=54,b=csx1+166;
for(i=0;i<=7;i++)
{
setcolor(15);
graphicText(a,csy2-195,bd_4signal[i]);
setcolor(15);
graphicText(b,380,bd_4signal[i]);
a+=ask_lcycle;b+=7;
}
setcolor(9);
outtextxy(30,380,"Data = ");
//getch();
}
//////////////////////////////////////////////////////////////////
void fskDataBox()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,220+4);
setfillstyle(1,15);
bar(140,100,634,220);
setfillstyle(1,9);
bar(142,102,632,120);
setcolor(15);
settextstyle(2,0,4);
outtextxy(145,104,"Frequency Shift Keying (ASK) Information");
setfillstyle(1,9);
bar(142,146,320,164);
outtextxy(145,146,"Frequency for 0 bit");
setfillstyle(1,8);
bar(332,144,379,164);
setfillstyle(1,1);
bar(334,146,377,162);
setfillstyle(1,15);
int xabc=336,yabc=148,xxyz,yxyz=160;
for(int i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,166,320,184);
outtextxy(145,166,"Frequency for 1 bit");
setfillstyle(1,8);
bar(332,164,379,184);
setfillstyle(1,1);
bar(334,166,377,182);
setfillstyle(1,15);
xabc=336,yabc=168,xxyz,yxyz=180;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,184,550,204);
setfillstyle(1,9); //inner
bar(500+2,184+2,550-2,204-2);
setfillstyle(1,1);
bar(560,184,610,204);
setfillstyle(1,9); //inner
bar(560+2,184+2,610-2,204-2);
outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
}
///////////////////////////////////////////////
int fskInputFun()
{
fsk.amp = c_amplitude;
fsk.phase = c_phase;
int x1=336,y1=128,x2=354,y2=140;
char ookCheck,t_afp[2];
/////////////////////////////////ook check
int i=0;
x1=336;x2=354;y1=148;y2=160;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
fsk.hz0 = atoi(t_afp);
///////////////////////////////////////////////////amp1
x1=336;x2=354;y1=168;y2=180;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
fsk.hz1=atoi(t_afp);
/////////////////////////////////////////////////
int choice=0; //0 done 1 reset
//x1=502;y1=186;x2=548;y2=200;
x1=562;y1=186;x2=608;y2=202;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=1;x1=502;y1=186;x2=548;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=0;x1=502;y1=186;x2=548;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
}
///////////////////////////////////////////////
void calc_fsk_sinewave(int hz01)
{
float frequency;
frequency = (2 * pi * hz01)/fsk_sr;
for (int t = 0; t<fsk_lcycle;t++)
fsk.sine_value[t] = fsk.amp * (sin((frequency*t)+ fsk.phase));
}
////////////////////////////////////////////////
void fsk_main()
{
fsk.x=32;
for (int i = 0;i<8;i++)
{
if (bd_4signal[i] == '0')
{
calc_fsk_sinewave(fsk.hz0*10);
create_fsk_waves();
}
else
{
calc_fsk_sinewave(fsk.hz1*10);
create_fsk_waves();
}
}
}
////////////////////////////////////////////////////
void create_fsk_waves()
{
int y=200,x1,y1;
setcolor(2);
setlinestyle(0,0,3);
for(int i=0;i<fsk_lcycle;i++)
{
x1=fsk.x+i;
if(fsk.sine_value[i] >= 0)
y1=y-fsk.sine_value[i];
else
y1=y+((-1)*fsk.sine_value[i]);
line(x1,y1,x1,y1);
}
fsk.x=x1;
}
///////////////////////////////////////////////////////
void create_graph_fsk()
{
int csx1=30,csy1=100, csx2=620,csy2=300;
setcolor(15);
show_int_graph(fsk.amp,2,csx1-25,csy2-csy1-fsk.amp-5);
show_int_graph(((-1)*fsk.amp),3,csx1-30,csy2-csy1+fsk.amp-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-fsk.amp,csx1+4,csy2-csy1-fsk.amp);
line(csx1-4,csy2-csy1+fsk.amp,csx1+4,csy2-csy1+fsk.amp);
setcolor(4);
setlinestyle(0,0,3);
line(csx1,csy1,csx1,csy2);
line(csx1,csy2-csy1,csx2,csy2-csy1);
setcolor(9);
setlinestyle(1,1,1);
for(int i = csx1+fsk_lcycle; i<csx2;i+=fsk_lcycle-1)
line(i,csy1,i,csy2);
outtextxy(csx1,csy2+100,"Frequency for 0 = ");
outtextxy(csx1,csy2+120,"Frequency for 1 = ");
outtextxy(csx1,csy2+140,"Amplitude = ");
outtextxy(csx1,csy2+160,"Phase = ");
setcolor(15);
show_int_graph(fsk.hz0,2,csx1+160,csy2+100);
show_int_graph(fsk.hz1,2,csx1+160,csy2+120);
show_int_graph(fsk.amp,2,csx1+160,csy2+140);
show_int_graph(c_angle,3,csx1+160,csy2+160);
settextstyle(1,0,4);
setcolor(15);
outtextxy(csx1,30,"Frequency Shift Keying");
setfillstyle(1,9);
bar(csx1,70,csx1+370,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,468,"Press any key to continue");
int a=54,b=csx1+166;
for(i=0;i<=7;i++)
{
setcolor(15);
graphicText(a,csy2-195,bd_4signal[i]);
setcolor(15);
graphicText(b,380,bd_4signal[i]);
a+=ask_lcycle;b+=7;
}
setcolor(9);
outtextxy(30,380,"Data = ");
//getch();
}
//////////////////////////////////////////////
void pskDataBox()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,220+4);
setfillstyle(1,15);
bar(140,100,634,220);
setfillstyle(1,9);
bar(142,102,632,120);
setcolor(15);
settextstyle(2,0,4);
outtextxy(145,104,"Phase Shift Keying (ASK) Information");
setfillstyle(1,9);
bar(142,146,320,164);
outtextxy(145,146,"Phase for 0 bit");
setfillstyle(1,8);
bar(332,144,399,164);
setfillstyle(1,1);
bar(334,146,397,162);
setfillstyle(1,15);
int xabc=336,yabc=148,xxyz,yxyz=160;
for(int i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,166,320,184);
outtextxy(145,166,"Phase for 1 bit");
setfillstyle(1,8);
bar(332,164,399,184);
setfillstyle(1,1);
bar(334,166,397,182);
setfillstyle(1,15);
xabc=336,yabc=168,xxyz,yxyz=180;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,184,550,204);
setfillstyle(1,9); //inner
bar(500+2,184+2,550-2,204-2);
setfillstyle(1,1);
bar(560,184,610,204);
setfillstyle(1,9); //inner
bar(560+2,184+2,610-2,204-2);
outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
}
///////////////////////////////////////////////
int pskInputFun()
{
psk.amp = c_amplitude;
psk.frequency = c_frequency;
int x1=336,y1=128,x2=354,y2=140;
char ookCheck,t_afp[3];
int i=0;
x1=336;x2=354;y1=148;y2=160;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
psk.ang0 = atoi(t_afp);
psk.phase0 = psk.ang0*(2*pi/360);
///////////////////////////////////////////////////amp1
x1=336;x2=354;y1=168;y2=180;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
psk.ang1=atoi(t_afp);
psk.phase1 = psk.ang1*(2*pi/360);
/////////////////////////////////////////////////
int choice=0; //0 done 1 reset
//x1=502;y1=186;x2=548;y2=200;
x1=562;y1=186;x2=608;y2=202;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,188,"Reset");
outtextxy(570,188,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=1;x1=502;y1=186;x2=548;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=186;x2=608;y2=202;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,188,"Apply")
;
choice=0;x1=502;y1=186;x2=548;y2=202;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,188,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
}
///////////////////////////////////////////////
void calc_psk_sinewave(int ph01)
{
float frequency;
frequency = (2 * pi * c_hz)/psk_sr;
for (int t = 0; t<psk_lcycle;t++)
psk.sine_value[t] = psk.amp * (sin((frequency*t)+ ph01));
}
////////////////////////////////////////////////
void psk_main()
{
psk.x=32;
for (int i = 0;i<8;i++)
{
if (bd_4signal[i] == '0')
{
calc_psk_sinewave(psk.phase0);
create_psk_waves();
}
else
{
calc_psk_sinewave(psk.phase1);
create_psk_waves();
}
}
}
////////////////////////////////////////////////////
void create_psk_waves()
{
int y=200,x1,y1;
setcolor(2);
setlinestyle(0,0,3);
for(int i=0;i<psk_lcycle;i++)
{
x1=psk.x+i;
if(psk.sine_value[i] >= 0)
y1=y-psk.sine_value[i];
else
y1=y+((-1)*psk.sine_value[i]);
line(x1,y1,x1,y1);
}
psk.x=x1;
}
///////////////////////////////////////////////////////
void create_graph_psk()
{
int csx1=30,csy1=100, csx2=620,csy2=300;
setcolor(15);
show_int_graph(psk.amp,2,csx1-25,csy2-csy1-psk.amp-5);
show_int_graph(((-1)*psk.amp),3,csx1-30,csy2-csy1+psk.amp-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-psk.amp,csx1+4,csy2-csy1-psk.amp);
line(csx1-4,csy2-csy1+psk.amp,csx1+4,csy2-csy1+psk.amp);
setcolor(4);
setlinestyle(0,0,3);
line(csx1,csy1,csx1,csy2);
line(csx1,csy2-csy1,csx2,csy2-csy1);
setcolor(9);
setlinestyle(1,1,1);
for(int i = csx1+psk_lcycle; i<csx2;i+=psk_lcycle-1)
line(i,csy1,i,csy2);
outtextxy(csx1,csy2+100,"Phase for 0 = ");
outtextxy(csx1,csy2+120,"Phase for 1 = ");
outtextxy(csx1,csy2+140,"Amplitude = ");
outtextxy(csx1,csy2+160,"Frequency = ");
setcolor(15);
show_int_graph(psk.ang0,3,csx1+160,csy2+100);
show_int_graph(psk.ang1,3,csx1+160,csy2+120);
show_int_graph(psk.amp,2,csx1+160,csy2+140);
show_int_graph(psk.frequency,2,csx1+160,csy2+160);
settextstyle(1,0,4);
setcolor(15);
outtextxy(csx1,30,"Phase Shift Keying");
setfillstyle(1,9);
bar(csx1,70,csx1+370,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,468,"Press any key to continue");
int a=54,b=csx1+166;
for(i=0;i<=7;i++)
{
setcolor(15);
graphicText(a,csy2-195,bd_4signal[i]);
setcolor(15);
graphicText(b,380,bd_4signal[i]);
a+=ask_lcycle;b+=7;
}
setcolor(9);
outtextxy(30,380,"Data = ");
//getch();
}
//////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//
void carrierDataBox_4qam()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,270+4);
setfillstyle(1,15);
bar(140,100,634,270);
setfillstyle(1,9);
bar(142,102,632,120);
settextstyle(2,0,4);
outtextxy(145,104,"Enter 24 bits (3 bytes)");
setfillstyle(1,8);
bar(142,130,560,162);
setfillstyle(1,1);
bar(144,132,558,160);
setfillstyle(1,15);
int xabc=150,yabc=134,xxyz,yxyz=158;
for(int i=0;i<=23;i++)
{
xxyz=xabc+15;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,180,632,198);
outtextxy(145,182,"Carrier Signal Information");
bar(142,204,220,222);
outtextxy(145,206,"Amplitude");
setfillstyle(1,8);
bar(225,204,272,222);
setfillstyle(1,1);
bar(227,206,270,220);
setfillstyle(1,15);
xabc=230,yabc=208,xxyz,yxyz=218;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,224,220,242);
outtextxy(145,226,"Frequency");
setfillstyle(1,8);
bar(225,224,272,242);
setfillstyle(1,1);
bar(227,226,270,240);
setfillstyle(1,15);
xabc=230,yabc=228,xxyz,yxyz=238;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,244,220,262);
outtextxy(145,246,"Phase");
setfillstyle(1,8);
bar(225,244,292,262);
setfillstyle(1,1);
bar(227,246,290,260);
setfillstyle(1,15);
xabc=230,yabc=248,xxyz,yxyz=258;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,244,550,262);
setfillstyle(1,9); //inner
bar(500+2,244+2,550-2,262-2);
setfillstyle(1,1);
bar(560,244,610,262);
setfillstyle(1,9); //inner
bar(560+2,244+2,610-2,262-2);
outtextxy(510,247,"Reset");
outtextxy(570,247,"Apply");
}
////////////////////////////////////////////////
int carrierInputFun_4qam()
{
/////////////////////////////////digit
int x1=150,x2=150,y1=134,y2=158;
int i=0;
do{
i+=1;
x2=x1+(15);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
bd_4qam[i-1] = getche();
if(bd_4qam[i-1] != '0' && bd_4qam[i-1] != '1')
{i-=1;x2-=20;}
graphicText(x1+4,y1+6,bd_4qam[i-1]);
if(i == 24)break;
x1=x2+2;
}while(1);
bd_4qam[24]='/0';
/////////////////////////////////amplitude
x1=230,x2=230,y1=208,y2=218;
char t_afp[2];
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
c_amplitude = atoi(t_afp);
//////////////////////////////////////////frequency
x1=230,x2=230,y1=228,y2=238;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
c_hz = atoi(t_afp);
//////////////////////////////////////////phase
x1=230,x2=230,y1=248,y2=258;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+4,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
c_angle = atoi(t_afp);
/////////////////////////////////////////////////
c_hz*=10;
c_phase = c_angle*(2*pi/360);
/////////////////////////////////////////////////button
int choice=0; //0 done 1 reset
//x1=502;y1=246;x2=548;y2=260;
x1=562;y1=246;x2=608;y2=260;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,247,"Reset");
outtextxy(570,247,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=246;x2=608;y2=260;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,247,"Apply")
;
choice=1;x1=502;y1=246;x2=548;y2=260;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,247,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=246;x2=608;y2=260;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,247,"Apply")
;
choice=0;x1=502;y1=246;x2=548;y2=260;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,247,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
}
///////////////////////////////////////////////
void qamDataBox()
{
setfillstyle(1,0);
bar(130,80,639,440);
setfillstyle(1,8);
bar(140-4,100-4,640+4,246+4);
setfillstyle(1,15);
bar(140,100,634,246);
setfillstyle(1,9);
bar(142,102,632,120);
setcolor(15);
settextstyle(2,0,4);
outtextxy(145,104,"Quadrature Amplitude Modulation (QAM)");
bar(142,124,320,142);
outtextxy(145,126,"First Amplitude");
setfillstyle(1,8);
bar(332,124,379,144);
setfillstyle(1,1);
bar(334,126,377,142);
setfillstyle(1,15);
int xabc=336,yabc=128,xxyz,yxyz=140;
for(int i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,146,320,164);
outtextxy(145,146,"Second Amplitude");
setfillstyle(1,8);
bar(332,144,379,164);
setfillstyle(1,1);
bar(334,146,377,162);
setfillstyle(1,15);
xabc=336,yabc=148,xxyz,yxyz=160;
for(i=0;i<=1;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,166,320,184);
outtextxy(145,166,"First Phase");
setfillstyle(1,8);
bar(332,164,399,184);
setfillstyle(1,1);
bar(334,166,397,182);
setfillstyle(1,15);
xabc=336,yabc=168,xxyz,yxyz=180;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,186,320,204);
outtextxy(145,188,"Second Phase");
setfillstyle(1,8);
bar(332,184,399,202);
setfillstyle(1,1);
bar(334,186,397,200);
setfillstyle(1,15);
xabc=336,yabc=188,xxyz,yxyz=198;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,206,320,224);
outtextxy(145,208,"Third Phase");
setfillstyle(1,8);
bar(332,203,399,222);
setfillstyle(1,1);
bar(334,206,397,220);
setfillstyle(1,15);
xabc=336,yabc=208,xxyz,yxyz=218;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,9);
bar(142,226,320,244);
outtextxy(145,228,"Fourth Phase");
setfillstyle(1,8);
bar(332,223,399,242);
setfillstyle(1,1);
bar(334,226,397,240);
setfillstyle(1,15);
xabc=336,yabc=228,xxyz,yxyz=238;
for(i=0;i<=2;i++)
{
xxyz=xabc+18;
bar(xabc,yabc,xxyz,yxyz);
xabc=xxyz+2;
}
setfillstyle(1,1);
bar(500,224,550,244);
setfillstyle(1,9); //inner
bar(500+2,224+2,550-2,244-2);
setfillstyle(1,1);
bar(560,224,610,244);
setfillstyle(1,9); //inner
bar(560+2,224+2,610-2,244-2);
outtextxy(510,228,"Reset");
outtextxy(570,228,"Apply");
}
///////////////////////////////////////////////
int qamInputFun()
{
qam.frequency = c_frequency;
char t_afp[3];
int i=0;
i=0;
/////////////////////////////////////////////amp1
int x1=336,y1=128,x2=354,y2=140;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
qam.amp1 = atoi(t_afp);
///////////////////////////////////////////////////amp2
x1=336;x2=354;y1=148;y2=160;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 2)break;
x1=x2+2;
}while(1);
qam.amp2=atoi(t_afp);
/////////////////////////////////////////////////phase1
x1=336;x2=354;y1=168;y2=180;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
qam.ang1=atoi(t_afp);
qam.phase1 = qam.ang1*(2*pi/360);
/////////////////////////////////////////////////phase2
x1=336;x2=354;y1=188;y2=198;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
qam.ang2=atoi(t_afp);
qam.phase2 = qam.ang2*(2*pi/360);
/////////////////////////////////////////////////phase3
x1=336;x2=354;y1=208;y2=218;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
qam.ang3=atoi(t_afp);
qam.phase3 = qam.ang3*(2*pi/360);
/////////////////////////////////////////////////phase4
x1=336;x2=354;y1=228;y2=238;
i=0;
do{
i+=1;
x2=x1+(18);
setfillstyle(1,9);
bar(x1,y1,x2,y2);
t_afp[i-1] = getche();
if(t_afp[i-1] < '0' || t_afp[i-1] > '9')
{i-=1;x2-=20;}
graphicText(x1+6,y1,t_afp[i-1]);
if(i == 3)break;
x1=x2+2;
}while(1);
qam.ang4=atoi(t_afp);
qam.phase4 = qam.ang4*(2*pi/360);
/////////////////////////////////////////////////
int choice=0; //0 done 1 reset
//x1=502;y1=186;x2=548;y2=200;
x1=562;y1=226;x2=608;y2=242;
setcolor(9);
setfillstyle(1,15); //inner
bar(x1,y1,x2,y2);
//outtextxy(510,188,"Reset");
outtextxy(570,226,"Apply");
while(1)
{
switch(getch())
{
case 77:
case 75:
{
if(choice==0)
{
x1=562;y1=226;x2=608;y2=242;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(570,226,"Apply")
;
choice=1;x1=502;y1=226;x2=548;y2=242;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(510,226,"Reset")
;
}
else if (choice==1)
{
x1=562;y1=226;x2=608;y2=242;
setcolor(9);setfillstyle(1,15);bar(x1,y1,x2,y2);outtextxy(570,226,"Apply")
;
choice=0;x1=502;y1=226;x2=548;y2=242;
setcolor(15);setfillstyle(1,9);bar(x1,y1,x2,y2);outtextxy(510,226,"Reset")
;
}
break;
}
case '
':
if(choice == 0)return(1); else return(0);
}
}
}
///////////////////////////////////////////////
void showDtable()
{
setfillstyle(1,8);
bar(140-4,280-4,640,410+4);
setfillstyle(1,15);
bar(140,280,634,410);
setfillstyle(1,9);
bar(142,282,632,302);
setfillstyle(1,9);
bar(142,306,632,408);
setfillstyle(1,1);
bar(142,306,632,326);
setcolor(15);
settextstyle(2,0,4);
outtextxy(330,286,"8-QAM Data Table");
setfillstyle(1,1);
bar(142,306,242,408);
setfillstyle(1,15);
bar(242,306,244,410);
bar(142,326,632,328);
bar(142,346,632,348);
bar(142,366,632,368);
bar(142,386,632,388);
bar(420,306,422,410);
setcolor(15);
setlinestyle(0,0,2);
line(142,306,244,326);
setcolor(15);
settextstyle(2,0,4);
outtextxy(189,305,"Amplitude");
outtextxy(149,314,"Phase");
setcolor(15);
show_int_graph(qam.ang1,3,170,332);
show_int_graph(qam.ang2,3,170,352);
show_int_graph(qam.ang3,3,170,372);
show_int_graph(qam.ang4,3,170,392);
show_int_graph(qam.amp1,2,320,311);
show_int_graph(qam.amp2,3,510,311);
setcolor(1);
outtextxy(320,332,"000");
outtextxy(512,332,"001");
outtextxy(320,352,"010");
outtextxy(512,352,"011");
outtextxy(320,372,"100");
outtextxy(512,372,"101");
outtextxy(320,392,"110");
outtextxy(512,392,"111");
setfillstyle(1,8);
bar(560,415,620,435);
setfillstyle(1,15); //inner
bar(560+1,415+1,620-1,435-1);
setfillstyle(1,9); //inner
bar(560+2,415+2,620-2,435-2);
setcolor(15);
outtextxy(568,420,"Continue");
}
//////////////////////////////////////////////////////////////////////////
//
void creategraph_Dqam()
{
y12=yvalue2-20,x12=20,y22=yvalue2;
int cgx1=20,cgy1=140, cgx2=500,cgy2=yvalue2;
setcolor(4);
setlinestyle(0,1,3);
line(cgx1,cgy1,cgx1,cgy2);
line(cgx1,cgy2,cgx2,cgy2);
setcolor(14);
setlinestyle(1,1,1);
for(int i = cgx1+20; i<cgx2;i+=20)
line(i,cgy1,i,cgy2);
settextstyle(1,0,4);
setcolor(15);
outtextxy(x12,30,"DIGITAL SIGNAL");
setfillstyle(1,9);
bar(x12,70,x12+250,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,460,"Press any key to continue");
int a=30,b=100;
for(i=0;i<=23;i++)
{
setcolor(15);
graphicText(a,y22-100,bd_4qam[i]);
setcolor(15);
graphicText(b,400,bd_4qam[i]);
a+=20;b+=7;
}
setcolor(9);
outtextxy(40,400,"Data = ");
//getch();
}
/////////////////////////////////////////////////////
void createDsignal_Dqam()
{
setcolor(2);
int len=25;
for (int i=0;i<len-1;i++)
{
if(bd_4qam[i] == '0')
{
dsignal4_0_Dqam(i+1);
}
else
{
dsignal4_1_Dqam(i+1);
}
}
}
//////////////////////////////////////////////////////
void dsignal4_0_Dqam(int pos)
{
setcolor(2);
setlinestyle(0,1,lineweight);
int x=x12;x12+=20;
if (pos == 1 || (pos != 1 && bd_4qam[pos-2] == '0'))
line(x,y22,x+20,y22);
else
{
line(x,y12,x,y22);
line(x,y22,x+20,y22);
}
}
///////////////////////////////////////////////////////
void dsignal4_1_Dqam(int pos)
{
setcolor(2);
setlinestyle(0,1,lineweight);
int x=x12;x12+=20;
if (pos == 1 || (pos != 1 && bd_4qam[pos-2] == '1'))
line(x,y12,x+20,y12);
else
{
line(x,y12,x,y22);
line(x,y12,x+20,y12);
}
}
///////////////////////////////////////////////////////
///////////////////////////////////////////////
void calc_qam_sinewave(int phase,int amp)
{
float frequency;
frequency = (2 * pi * c_hz)/qam_sr;
for (int t = 0; t<qam_lcycle;t++)
qam.sine_value[t] = amp * (sin((frequency*t)+ phase));
}
////////////////////////////////////////////////
void qam_main()
{
qam.x=32;
for (int i = 0;i<25;i+=3)
{
if (bd_4qam[i] == '0' && bd_4qam[i+1] == '0' && bd_4qam[i+2] == '0')
{
calc_qam_sinewave(qam.phase1,qam.amp1);
create_qam_waves();
}
else if (bd_4qam[i] == '0' && bd_4qam[i+1] == '0' && bd_4qam[i+2] ==
'1')
{
calc_qam_sinewave(qam.phase1,qam.amp2);
create_qam_waves();
}
else if (bd_4qam[i] == '0' && bd_4qam[i+1] == '1' && bd_4qam[i+2] ==
'0')
{
calc_qam_sinewave(qam.phase2,qam.amp1);
create_qam_waves();
}
else if (bd_4qam[i] == '0' && bd_4qam[i+1] == '1' && bd_4qam[i+2] ==
'1')
{
calc_qam_sinewave(qam.phase2,qam.amp2);
create_qam_waves();
}
else if (bd_4qam[i] == '1' && bd_4qam[i+1] == '0' && bd_4qam[i+2] ==
'0')
{
calc_qam_sinewave(qam.phase3,qam.amp1);
create_qam_waves();
}
else if (bd_4qam[i] == '1' && bd_4qam[i+1] == '0' && bd_4qam[i+2] ==
'1')
{
calc_qam_sinewave(qam.phase3,qam.amp2);
create_qam_waves();
}
else if (bd_4qam[i] == '1' && bd_4qam[i+1] == '1' && bd_4qam[i+2] ==
'0')
{
calc_qam_sinewave(qam.phase4,qam.amp1);
create_qam_waves();
}
else if (bd_4qam[i] == '1' && bd_4qam[i+1] == '1' && bd_4qam[i+2] ==
'1')
{
calc_qam_sinewave(qam.phase4,qam.amp2);
create_qam_waves();
}
}
}
////////////////////////////////////////////////////
void create_qam_waves()
{
int y=200,x1,y1;
setcolor(2);
setlinestyle(0,0,3);
for(int i=0;i<fsk_lcycle;i++)
{
x1=qam.x+i;
if(qam.sine_value[i] >= 0)
y1=y-qam.sine_value[i];
else
y1=y+((-1)*qam.sine_value[i]);
line(x1,y1,x1,y1);
}
qam.x=x1;
}
///////////////////////////////////////////////////////
void create_graph_qam()
{
int csx1=30,csy1=100, csx2=620,csy2=300;
setcolor(15);
show_int_graph(qam.amp1,2,csx1-25,csy2-csy1-qam.amp1-5);
show_int_graph(((-1)*qam.amp1),3,csx1-30,csy2-csy1+qam.amp1-5);
show_int_graph(qam.amp2,2,csx1-25,csy2-csy1-qam.amp2-5);
show_int_graph(((-1)*qam.amp2),3,csx1-30,csy2-csy1+qam.amp2-5);
setlinestyle(0,0,1);
line(csx1-4,csy2-csy1-qam.amp1,csx1+4,csy2-csy1-qam.amp1);
line(csx1-4,csy2-csy1+qam.amp1,csx1+4,csy2-csy1+qam.amp1);
line(csx1-4,csy2-csy1-qam.amp2,csx1+4,csy2-csy1-qam.amp2);
line(csx1-4,csy2-csy1+qam.amp2,csx1+4,csy2-csy1+qam.amp2);
setcolor(4);
setlinestyle(0,0,3);
line(csx1,csy1,csx1,csy2);
line(csx1,csy2-csy1,csx2,csy2-csy1);
setcolor(9);
setlinestyle(1,1,1);
for(int i = csx1+qam_lcycle; i<csx2;i+=qam_lcycle-1)
line(i,csy1,i,csy2);
settextstyle(2,0,4);
outtextxy(csx1+360,csy2+10,"Frequency for 0 = ");
setcolor(15);
show_int_graph(c_hz,2,csx1+480,csy2+10);
settextstyle(1,0,4);
setcolor(15);
outtextxy(csx1,30,"QAM");
setfillstyle(1,9);
bar(csx1,70,csx1+370,72);
settextstyle(2,0,4);setcolor(15);
outtextxy(260,468,"Press any key to continue");
int a=54,b=csx1+166;
for(i=0;i<=25;i+=3)
{
setcolor(15);
graphicText(a,csy2-195,bd_4qam[i]);
graphicText(a+7,csy2-195,bd_4qam[i+1]);
graphicText(a+7+7,csy2-195,bd_4qam[i+2]);
setcolor(15);
graphicText(b,310,bd_4qam[i]);
b+=7;
graphicText(b,310,bd_4qam[i+1]);
b+=7;
graphicText(b,310,bd_4qam[i+2]);
a+=ask_lcycle;b+=7;
}
setcolor(9);
outtextxy(40,310,"Data = ");
//getch();
}
//////////////////////////////////////////////
void showDtable2()
{
setfillstyle(1,8);
bar(140-4-100,280-4+50,640-100,410+4+50);
setfillstyle(1,15);
bar(140-100,280+50,634-100,410+50);
setfillstyle(1,9);
bar(142-100,282+50,632-100,302+50);
setfillstyle(1,9);
bar(142-100,306+50,632-100,408+50);
setfillstyle(1,1);
bar(142-100,306+50,632-100,326+50);
setcolor(15);
settextstyle(2,0,4);
outtextxy(330-100,286+50,"8-QAM Data Table");
setfillstyle(1,1);
bar(142-100,306+50,242-100,408+50);
setfillstyle(1,15);
bar(242-100,306+50,244-100,410+50);
bar(142-100,326+50,632-100,328+50);
bar(142-100,346+50,632-100,348+50);
bar(142-100,366+50,632-100,368+50);
bar(142-100,386+50,632-100,388+50);
bar(420-100,306+50,422-100,410+50);
setcolor(15);
setlinestyle(0,0,2);
line(142-100,306+50,244-100,326+50);
setcolor(15);
settextstyle(2,0,4);
outtextxy(189-100,305+50,"Amplitude");
outtextxy(149-100,314+50,"Phase");
setcolor(15);
show_int_graph(qam.ang1,3,170-100,332+50);
show_int_graph(qam.ang2,3,170-100,352+50);
show_int_graph(qam.ang3,3,170-100,372+50);
show_int_graph(qam.ang4,3,170-100,392+50);
show_int_graph(qam.amp1,2,320-100,311+50);
show_int_graph(qam.amp2,3,510-100,311+50);
setcolor(1);
outtextxy(320-100,332+50,"000");
outtextxy(512-100,332+50,"001");
outtextxy(320-100,352+50,"010");
outtextxy(512-100,352+50,"011");
outtextxy(320-100,372+50,"100");
outtextxy(512-100,372+50,"101");
outtextxy(320-100,392+50,"110");
outtextxy(512-100,392+50,"111");
}

 

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