최종파일

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "constellation", "constellation\constellation.vcxproj", "{6FF25C27-45BF-4502-A1F8-0EFB069E1515}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Debug|x64.ActiveCfg = Debug|x64
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Debug|x64.Build.0 = Debug|x64
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Debug|x86.ActiveCfg = Debug|Win32
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Debug|x86.Build.0 = Debug|Win32
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Release|x64.ActiveCfg = Release|x64
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Release|x64.Build.0 = Release|x64
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Release|x86.ActiveCfg = Release|Win32
+		{6FF25C27-45BF-4502-A1F8-0EFB069E1515}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

+  sender.cpp
+c:\users\ghdwn\documents\hong joowon file\경희대\2019-1학기\소프트웨어 랩\과제 8\새 폴더\constellation\constellation\constellation\sender.cpp(42): warning C4244: '=': 'double'에서 'float'(으)로 변환하면서 데이터가 손실될 수 있습니다.
+c:\users\ghdwn\documents\hong joowon file\경희대\2019-1학기\소프트웨어 랩\과제 8\새 폴더\constellation\constellation\constellation\sender.cpp(43): warning C4244: '=': 'double'에서 'float'(으)로 변환하면서 데이터가 손실될 수 있습니다.
+  constellation.vcxproj -> C:\Users\ghdwn\Documents\Hong joowon file\경희대\2019-1학기\소프트웨어 랩\과제 8\새 폴더\constellation\constellation\Debug\constellation.exe

+#TargetFrameworkVersion=v4.0:PlatformToolSet=v141:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit:WindowsTargetPlatformVersion=10.0.16299.0
+Debug|Win32|C:\Users\ghdwn\Documents\Hong joowon file\경희대\2019-1학기\소프트웨어 랩\과제 8\새 폴더\constellation\constellation\|

+#include"channel.h"
+#include<cstdlib>
+using namespace std;
+
+void Cchannel::AWGN() {
+	ofstream myout;
+	myout.open("channel.txt");
+	//N = 8;
+	default_random_engine generator;
+	normal_distribution<double> dist(0.0, N);
+	
+	
+	for (int k = 0; k < Nbits / Nbitspersymbol * Nsamplespersymbol; k++)
+		n[k] = dist(generator);
+	
+	matrixadd(1, Nbits / Nbitspersymbol * Nsamplespersymbol, s, n, r);
+
+	for (int i = 0; i < Nbits / Nbitspersymbol * Nsamplespersymbol; i++)
+	{
+		
+		myout << r[i] << endl;
+	}
+
+	myout.close();
+}
\ No newline at end of file

+#ifndef __CHANNEL
+
+#define __CHANNEL
+#include <cmath>
+#include <random>
+#include "variables.h"
+class Cchannel {
+public:
+	Cchannel() {};
+	float N=8;
+	float *s; // trasmitted signal
+	float r[Nbits / Nbitspersymbol*Nsamplespersymbol]; // corrupted signal
+	float n[Nbits / Nbitspersymbol * Nsamplespersymbol];
+	void AWGN();
+};
+#endif
\ No newline at end of file

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+    <ClCompile Include="channel.cpp" />
+    <ClCompile Include="constellation_main.cpp" />
+    <ClCompile Include="evaluate.cpp" />
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\ No newline at end of file

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\ No newline at end of file

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>
\ No newline at end of file

+#include <iostream>
+using namespace std;
+#include "sender2.h"
+#include "channel.h"
+#include "receiver.h"
+#include "evaluate.h"
+void main() {
+	Csender mySender;
+	Cchannel myChannel;
+	Creceiver myReceiver;
+	Cevaluate myEvaluator;
+	ofstream myout;
+	//myout.open("testSNR5.txt");
+	//for (myChannel.N = 12.; 0<myChannel.N; myChannel.N = myChannel.N-0.1)
+	//{
+	cout << myChannel.N << endl;
+	mySender.transmitData();  // generate data[ ], s[ ]
+	myChannel.s = mySender.s;
+	myChannel.AWGN();         // calculate r[ ]
+
+	myReceiver.r = myChannel.r;
+	myReceiver.c0 = mySender.c0;
+	myReceiver.c1 = mySender.c1;
+	myReceiver.demodulate();  // calculate constellation[ ], DecodedData[ ];
+
+	myEvaluator.At = mySender.At;
+	myEvaluator.Bt = mySender.Bt;
+	myEvaluator.At_ = myReceiver.At_;
+	myEvaluator.Bt_ = myReceiver.Bt_;
+	myEvaluator.A = mySender.A;
+	//myEvaluator.Data = mySender.data;
+	myEvaluator.N = myChannel.N;
+	//myEvaluator.DecodedData = myReceiver.DecodedData;
+	myEvaluator.evaluate();   // compare the original and the decoded
+
+	//myout  << myEvaluator.SNR <<" "<< myEvaluator.errorrate<< " " << myEvaluator.SNR2 <<" "<< myEvaluator.errorrate << endl;
+	//}
+	myout.close();
+	 getchar();
+}
\ No newline at end of file

+#include <cstdlib>
+#include"evaluate.h"
+
+using namespace std;
+
+void Cevaluate::evaluate()
+{
+	ofstream myout;
+	//myout.open("testsnr.txt");
+	float sum=0,sum2=0;
+	//cout << "At\t" << "A`t\t" << "|At-A`t|" << "\t\t" << "Bt\t" << "B`t\t" << "|Bt-B`t|" << "\n\n";
+	for (int i = 0; i < 500; i++)
+	{
+		sum += abs(At[i] - At_[i]) / abs(At[i]);
+		sum2 += abs(Bt[i] - Bt_[i]) / abs(Bt[i]);
+		
+		//myout << At[i] << " " << Bt[i] << " " << At_[i] << " " << Bt_[i] << " " << abs(At[i] - At_[i])/At[i] << " " << abs(Bt[i] - Bt_[i])/Bt[i] << endl;
+	}
+	errorrate = ((sum / 500) + (sum2 / 500)) / 2;
+	 E=A*A/4;
+	 SNR = 10 * log10(E / N);
+	 SNR2 = E / N;
+	cout << "에러율의 평균을 구해보자!" << endl;
+	//for (float a = 0; 0.1 < No ; a += 0.1) 
+		
+		cout << sum / 500 << "\t" << sum2 / 500 << "\t" << errorrate << "\t" << SNR <<"\t"<< SNR2 << endl;
+		//myout << ((sum / 500) + (sum2 / 500)) / 2 << " " << SNR2 << " " << SNR << endl;
+	
+	//myout.close();
+}
\ No newline at end of file

+#ifndef __EVALUATE
+
+#define __EVALUATE
+#include <cmath>
+#include "variables.h"
+class Cevaluate {
+public:
+	Cevaluate() {};
+	char *DecodedData;  // from the receiver
+	char *Data;         // from the sender
+	float A;
+	float *At, *Bt, *At_, *Bt_;
+	float N;
+
+	float E ;
+	float SNR ;
+	float SNR2;
+	float errorrate;
+	void evaluate();
+};
+#endif

+#include <iostream>
+#include "myMatrix.h"
+using namespace std;
+void scalarmult(int n, int m, float a, float *b, float *c){
+	int N = n*m;
+    for(int i=0;i<N;i++) c[i] = a*b[i];
+}
+void matrixadd(int n, int m, float *a, float *b, float *c){
+	int N = n*m;
+	for (int i = 0; i<N; i++) c[i] = a[i]+b[i];
+}  
+// (N by K) C X (K by M) D = (N by M) E 
+void matrixmult(int N, int K, int M, float*C, float*D, float*E) {
+	int n, k, m;
+	for (n = 0; n < N; n++)
+		for (m = 0; m < M; m++) {
+			float sum = 0;
+			for (k = 0; k < K; k++) sum += C[n*K + k] * D[k*M + m];
+			E[n*M + m] = sum;
+		}
+}
+// Solve equation Av = b               
+// return  0 when solution exists,
+//        -1 when solution does not exist.
+//   A ==> indentity matrix
+//   b ==> v (the solution)
+int GaussElimination(int N, float *a, float *b)
+{
+	float temp, aii, aji;
+	int i, j, k;
+	//showequation(N, a, b);
+	for (i = 0; i<N; i++) {
+		aii = a[i*N + i];
+		if (aii == 0.0) return -1; // 부정/불능 여기 더 할 일 있음
+								   // i-th row를 aii로 모두 나누기
+		for (k = i; k<N; k++) a[i*N + k] /= aii;
+		b[i] /= aii;
+		// 다른 row들의 i번째 항을 모두 0으로 만들기
+		for (j = 0; j<N; j++) {
+			if (i != j) {
+				aji = a[j*N + i];
+				for (k = i; k<N; k++) a[j*N + k] -= a[i*N + k] * aji;
+				b[j] -= b[i] * aji;
+			}// if(i!=j)
+		} // other rows
+		//showequation(N, a, b);
+	}
+	return 0;
+}
+void showMatrix(int n, int m, float* F) {
+	int i, j;
+	for (i = 0; i < n; i++) {
+		for (j = 0; j < m; j++) cout << F[i*m + j] << "\t";
+		cout << "\n";
+
+	}
+}
+void showMatrix(char*name, int n, int m, float* F) {
+	cout << name << endl;
+	showMatrix(n, m, F);
+}
+// show N X N matrix
+void showequation(int N, float *a, float *b)
+{
+	int i, j;
+	for (i = 0; i<N; i++)
+	{
+		for (j = 0; j<N; j++) cout << a[i*N + j] << "\t";
+		cout << b[i];
+	}
+	cout << "\n";
+}
\ No newline at end of file

+void scalarmult(int n, int m, float a, float *b, float *c); 
+void matrixadd(int n, int m, float *a, float *b, float *c); 
+void matrixmult(int N, int K, int M, float*C, float*D, float*E);
+int	GaussElimination(int, float*, float*);
+void showMatrix(int n, int m, float* F); 
+void showMatrix(char*name, int n, int m, float* F);
+void showequation(int N, float *a, float *b);
\ No newline at end of file

+#include"receiver.h"
+#include<cstdlib>
+using namespace std;
+
+void Creceiver::demodulate()
+{
+	int num = 0;
+	for (int i = 0; i < 500; i++) {
+		for (int k = 0; k < 20; k++) {
+			 Temp[k]=r[i * 20 + k] ;
+			 num++;
+		}
+		matrixmult(1, 20, 1, Temp, c0, receiver);
+		At_[i] = receiver[0];
+		
+		matrixmult(1, 20, 1, Temp, c1, receiver);
+		Bt_[i] = receiver[0] ;
+		
+	}
+
+	
+
+
+}
\ No newline at end of file

+#ifndef __RECEIVER
+
+#define __RECEIVER
+#include <cmath>
+#include "variables.h"
+class Creceiver {
+public:
+	Creceiver() {};
+	float *r; // corrupted signal = received signal
+	float *c0;
+	float *c1;
+	float At_[500];
+	float Bt_[500];
+	float dum1[Nbits / Nbitspersymbol];
+
+	float receiver[1];
+	float Temp[20];
+
+
+	float constellation[Nbits];
+	char DecodedData[Nbits];
+	void demodulate();
+};
+#endif

+#include"sender2.h"
+#include<cstdlib>
+using namespace std;
+
+void Csender::transmitData() {
+	srand((unsigned)time(NULL));
+
+	for (int i = 0; i < Nbits; i++)
+	{
+
+		int random = rand() % 2;
+
+		data[i] = random;
+	}
+
+
+
+	for (int k = 0; k < Nbits; k = k + 2)
+	{
+		if (data[k] == 0 && data[k + 1] == 0) {
+			At[k / 2] = A * 1;
+			Bt[k / 2] = A * 1;
+		}
+		else if (data[k] == 0 && data[k + 1] == 1) {
+			At[k / 2] = A * 1;
+			Bt[k / 2] = A * -1;
+		}
+		else if (data[k] == 1 && data[k + 1] == 0) {
+			At[k / 2] = A * -1;
+			Bt[k / 2] = A * 1;
+		}
+		else if (data[k] == 1 && data[k + 1] == 1) {
+			At[k / 2] = A * -1;
+			Bt[k / 2] = A * -1;
+		}
+
+	}
+	double t;
+	int k = 0;
+	for (t = 0; t < T; t += dt)
+	{
+		c0[k] = sqrt(2. / T)*cos(2 * PI*t / T);
+		c1[k] = sqrt(2. / T)*sin(2 * PI*t / T);
+		k++;
+	}
+	/*
+	for (int i = 0; i < 20; i++) {
+		cout <<"|" <<c0[i] << "\t" <<"|"<< "\t" << "|" << c1[i] << "\t" << "|"<<endl;
+	}
+	
+	cout << "\n"<<"matrix c0xc1" << "\n";
+	matrixmult(1, 20, 1, c0, c1, sender);
+	cout << sender[0] << endl;
+	
+	cout << "\n" << "matrix c0xc0" << "\n";
+	matrixmult(1, 20, 1, c0, c0, sender);
+	cout << sender[0] << endl;
+
+	cout << "\n" << "matrix c1xc1" << "\n";
+	matrixmult(1, 20, 1, c1, c1, sender);
+	cout << sender[0] << endl;
+	
+	*/
+
+	for (int i = 0; i < Nbits / Nbitspersymbol; i++) {
+		for (int k = 0; k < Nsamplespersymbol; k++)
+		{
+			s[i * Nsamplespersymbol + k] =  ((At[i] * c0[k]) + (Bt[i] * c1[k]));
+		}
+	}
+
+	
+	for (int i = 0; i < 500; i++) {
+		for (int k = 0; k < 20; k++) {
+			Temp[k] = s[i * 20 + k];
+		}
+
+		matrixmult(1, 20, 1, Temp, c0, sender);
+		
+		
+	}
+
+}
\ No newline at end of file

+#pragma once
+#ifndef __SENDER2
+#define __SENDER2
+#include <cmath>
+#include "variables.h"
+class Csender {
+public:
+	Csender() {};
+	int data[Nbits];
+	float s[Nbits / Nbitspersymbol * Nsamplespersymbol]; // trasmitted signal
+	void transmitData();
+	float At[Nbits / Nbitspersymbol], Bt[Nbits / Nbitspersymbol];
+	float c0[Nsamplespersymbol],c1[Nsamplespersymbol],sender[1];
+	float A = 10.;
+	float Temp[20];
+	double T=20./1.,dt=1./1.;
+
+};
+#endif
\ No newline at end of file

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+#ifndef __VARIABLES
+#define __VARIABLES
+#define Nbits             1000  // number of transmitted bits
+#define Nsamplespersymbol 20
+#define Nbitspersymbol    2     // QPSK
+#define Eb      40              // fixed ;
+#define No     4        // at SNR = 20dB, variable
+#define PI 3.141592
+//#define A 5;
+
+#include"myMatrix.h"
+#include<fstream>
+#include<iterator>
+#include<random>
+#include <iostream>
+#include<cstdlib>
+#include<ctime>
+#include<time.h>
+#include<stdlib.h>
+#include<math.h>
+#endif