Add last files

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

documentation/defense/defense.tex

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+\documentclass[
+	ngerman,
+    18pt,
+	authorontitle=true,
+]{bfhbeamer}
+
+%\usepackage[main=ngerman]{babel}
+
+% Der folgende Block ist nur bei pdfTeX auf Versionen vor April 2018 notwendig
+\usepackage{iftex}
+\ifPDFTeX
+\usepackage[utf8]{inputenc}%kompatibilität mit TeX Versionen vor April 2018
+\fi
+
+\usepackage{bytefield}
+
+\graphicspath{ {defense/assets/} }
+%Makros für Formatierungen der Doku
+%Im Allgemeinen nicht notwendig!
+\let\code\texttt
+
+\setbeamertemplate{section page}[BFH-ruled]
+\AtBeginSection{\sectionpage}
+
+\title{Inductive Short-Range Communication Channel}
+\subtitle{Bachelorthesis}
+\author[S. Kaderli]{Severin Kaderli}
+\institute{Bern University of Applied Sciences}
+
+
+\begin{document}
+
+\maketitle
+
+\section{Demo}
+
+
+\section{Introduction}
+\begin{frame}{Goals}
+	The goal of the thesis was to create a communication channel that utilizes magnetic induction with the help of readily available components.
+\end{frame}
+
+\begin{frame}{Magnetic Induction}
+	Magnetic Induction (MI), also known as magnetic flux density or simply the magnetic field,
+    is a physical quantity measured in Tesla T. The movement of electric charges in a conductor produces a magnetic field around the conductor. 
+\end{frame}
+
+\section{Solution}
+\begin{frame}{MagSend}
+	\begin{itemize}
+        \item{Uses two devices}
+        \item{A laptop as sender}
+        \item{A phone as receiver}
+        \item{Laptop modifies a magnetic field}
+        \item{The phone measures the field}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Calibration}
+    \begin{columns}
+        \begin{column}{.5\linewidth}
+            \begin{figure}
+                \fbox{\includegraphics[width=1\linewidth]{test_cases/t2.png}}
+            \end{figure}
+        \end{column}
+        \begin{column}{.5\linewidth}
+            \begin{figure}
+                \fbox{\includegraphics[width=0.45\linewidth]{test_cases/t5.jpg}}
+            \end{figure}
+        \end{column}
+    \end{columns}
+\end{frame}
+
+\begin{frame}{Calibration}
+    \framesubtitle{CPU Load}
+    \begin{figure}
+        \fbox{\includegraphics[width=0.85\linewidth]{test_cases/t2_2.png}}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Sending}
+	\begin{figure}
+        \fbox{\includegraphics[width=0.65\linewidth]{test_cases/t9.png}}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Packet Format}
+	\begin{itemize}
+        \item{Header}
+            \begin{itemize}
+                \item{4 Bit}
+                \item{Payload Length; Up to 16 bytes}
+            \end{itemize}
+        \item{Payload}
+            \begin{itemize}
+                \item{Bit stream of the ASCII Text}
+                \item{Up to 16 characters}
+            \end{itemize}
+        \item{Checksum}
+            \begin{itemize}
+                \item{CRC-8-AUTOSAR}
+            \end{itemize}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Packet Format}
+    \framesubtitle{CRC-8-AUTOSAR}
+	\begin{itemize}
+        \item{Created by AUTOSAR}
+        \item{Single, and double bit errors}
+        \item{Burst errors of up to 8-bits}
+        \item{Errors with an odd number of bits}
+        \item{Up to 4 single bit errors in a message length up to 119 bits}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Packet Format}
+    \framesubtitle{Structure}
+	\begin{figure}
+        \includegraphics[width=1\linewidth]{packet.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Packet Format}
+    \framesubtitle{Example for Text: "Test"}
+	\begin{figure}
+        \includegraphics[width=1\linewidth]{packet_test.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Transmission}
+	\begin{itemize}
+        \item{Depending on the text, the website puts load on the CPU in a controlled way}
+        \item{High signals are 1, and low signals are 0}
+        \item{Packet is encoded using manchester encoding}
+        \item{Preamble to indicate the start of a packet}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Transmission}
+    \framesubtitle{Encoding}
+	\begin{figure}
+        \includegraphics[width=0.8\linewidth]{manchester_code.png}
+    \end{figure}
+    \footnote{https://commons.wikimedia.org/wiki/File:Manchester\_encoding\_both\_conventions.svg}
+\end{frame}
+
+\begin{frame}{Transmission}
+    \framesubtitle{CPU Load}
+	\begin{figure}
+        \includegraphics[width=0.9\linewidth]{test_cases/t3_2.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Transmission}
+    \framesubtitle{CPU Load Example for Packet}
+	\begin{figure}
+        \includegraphics[width=0.9\linewidth]{cpu_test.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Reception}
+	The phone uses a magnetometer sensor to get the signal from the magnetic field. From that signals it deconstructs the packet to get to the text.
+\end{frame}
+
+\begin{frame}{Reception}
+    \framesubtitle{Sensor Data}
+	\begin{figure}
+        \includegraphics[width=0.8\linewidth]{magnetic_induction_cpu.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Reception}
+    \framesubtitle{Sensor Data for Packet}
+	\begin{figure}
+        \includegraphics[width=0.9\linewidth]{magnetic_induction_test_packet.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Benchmarking}
+    \begin{itemize}
+        \item{Works well at idle CPU load with 1 bit/s}
+        \item{Problems already with 25\% CPU load}
+        \item{Problems with thermal throttling}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Benchmarking}
+    \framesubtitle{Thermal Throttling}
+	\begin{figure}
+        \includegraphics[width=0.9\linewidth]{benchmarking/1bps_25.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Use Cases}
+	\begin{itemize}
+        \item{Works without connectivity e.g. in airplane mode}
+        \item{Works better under water than radio waves}
+        \item{Possible applications for small data transmissions: similar to QR codes, 2FA}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Future Work}
+	\begin{itemize}
+        \item{Enhance the robustness}
+        \item{Increase transfer speed}
+        \item{Improve user experience and user interface}
+    \end{itemize}
+\end{frame}
+
+\section{Project Management}
+\begin{frame}{Organization}
+    \begin{itemize}
+        \item{Git Repository}
+        \item{Weekly meetings with advisor}
+        \item{Created plan at the start}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Project Plan}
+    \begin{figure}
+        \includegraphics[width=0.7\linewidth]{project_plan.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Project Plan}
+    \framesubtitle{Actual Plan}
+    \begin{figure}
+        \includegraphics[width=0.7\linewidth]{actual_plan.png}
+    \end{figure}
+\end{frame}
+
+\begin{frame}{Project Plan}
+    \framesubtitle{Explanation}
+    \begin{itemize}
+        \item{Beginning went well}
+        \item{COVID-19}
+        \item{Winter break}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Conclusion}
+    \begin{itemize}
+        \item{Working prototype}
+        \item{Better planning}
+        \item{Better logging}
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Try It Yourself}
+    \begin{columns}
+        \begin{column}{.5\linewidth}
+            https://magsend.kaderli.dev
+        \end{column}
+        \begin{column}{.5\linewidth}
+            \begin{figure}
+                \includegraphics[width=0.9\linewidth]{qr_app.png}
+            \end{figure}
+        \end{column}
+    \end{columns}
+\end{frame}
+
+\section{Questions}
+
+
+\end{document}
+