original files

+
+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

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

+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{6FF25C27-45BF-4502-A1F8-0EFB069E1515}</ProjectGuid>
+    <RootNamespace>constellation</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <PlatformToolset>v140</PlatformToolset>
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+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
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+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
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+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="constellation_main.cpp" />
+    <ClCompile Include="myMatrix.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="channel.h" />
+    <ClInclude Include="evaluate.h" />
+    <ClInclude Include="myMatrix.h" />
+    <ClInclude Include="receiver.h" />
+    <ClInclude Include="sender.h" />
+    <ClInclude Include="variables.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="소스 파일">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="헤더 파일">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="리소스 파일">
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+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="constellation_main.cpp">
+      <Filter>소스 파일</Filter>
+    </ClCompile>
+    <ClCompile Include="myMatrix.cpp">
+      <Filter>소스 파일</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="sender.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+    <ClInclude Include="variables.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+    <ClInclude Include="channel.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+    <ClInclude Include="receiver.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+    <ClInclude Include="evaluate.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+    <ClInclude Include="myMatrix.h">
+      <Filter>헤더 파일</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file

+#include <iostream>
+using namespace std;
+#include "sender.h"
+#include "channel.h"
+#include "receiver.h"
+#include "evaluate.h"
+void main() {
+	Csender mySender;
+	Cchannel myChannel;
+	Creceiver myReceiver;
+	Cevaluate myEvaluator;
+
+	mySender.transmitData();  // generate data[ ], s[ ]
+	myChannel.s = mySender.s;
+	myChannel.AWGN();         // calculate r[ ]
+	myReceiver.r = myChannel.r;
+	myReceiver.demodulate();  // calculate constellation[ ], DecodedData[ ];
+	myEvaluator.Data = mySender.data;
+	myEvaluator.DecodedData = myReceiver.DecodedData;
+	myEvaluator.evaluate();   // compare the original and the decoded
+}
\ 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
+	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

+#ifndef __RECEIVER
+
+#define __RECEIVER
+#include <cmath>
+#include "variables.h"
+class Creceiver {
+public:
+	Creceiver() {};
+	float *r; // corrupted signal = received signal
+	float constellation[Nbits];
+	char DecodedData[Nbits];
+	void demodulate();
+};
+#endif

+#ifndef __SENDER
+#define __SENDER
+#include <cmath>
+#include "variables.h"
+class Csender {
+public:
+	Csender() {};
+	char data[Nbits];
+	float s[Nbits/Nbitspersymbol*Nsamplespersymbol]; // trasmitted signal
+	void transmitData();
+};
+#endif

+#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
+#endif