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authorsara <sara.halter@gmx.ch>2021-12-23 23:35:13 +0100
committersara <sara.halter@gmx.ch>2021-12-23 23:35:13 +0100
commitea1c2d67623010b2b42a4a1a654f1ca37b57403e (patch)
tree086a1e3c3aed9181e3018de4da52b2b623a5d98a
parentSlides (diff)
downloadFading-ea1c2d67623010b2b42a4a1a654f1ca37b57403e.tar.gz
Fading-ea1c2d67623010b2b42a4a1a654f1ca37b57403e.zip
-rw-r--r--doc/slides_video/slides.pdfbin5885017 -> 6064875 bytes
-rw-r--r--doc/slides_video/slides.tex67
-rw-r--r--video/Multipath_Fading_Elevator_Speec.mkvbin0 -> 2261903 bytes
-rw-r--r--video/Multipath_Fading_Elevator_Speec.mp4bin0 -> 1845170 bytes
-rw-r--r--video/Text9
5 files changed, 46 insertions, 30 deletions
diff --git a/doc/slides_video/slides.pdf b/doc/slides_video/slides.pdf
index de35b86..3a4a6ee 100644
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diff --git a/doc/slides_video/slides.tex b/doc/slides_video/slides.tex
index 4a916d0..7774532 100644
--- a/doc/slides_video/slides.tex
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@@ -98,40 +98,47 @@
\end{frame}
-\begin{frame}{Channel model}
-\begin{columns}
- \begin{column}{.5\linewidth}
- \begin{itemize}
- \item Discrete-time model
- \end{itemize}
- \vspace{0.2cm}
- \begin{figure}
- \includegraphics[width=\linewidth]{figures/screenshots/discred_time}
- \end{figure}
- \end{column}
- \begin{column}{.5\linewidth}
- \begin{itemize}
- \item Statistical model
- \end{itemize}
- \vspace{0.2cm}
- \begin{column}{.5\linewidth}
- \begin{figure}
- \includegraphics[width=\linewidth]{figures/screenshots/selectiv_1}
- \end{figure}
- \end{column}
- \begin{column}{.5\linewidth}
- \begin{figure}
- \includegraphics[width=\linewidth]{figures/screenshots/selectiv_2}
- \end{figure}
- \end{column}
- \end{column}
-\end{columns}
+%\begin{frame}{Channel model}
+%\begin{columns}
+% \begin{column}{.5\linewidth}
+% \begin{itemize}
+% \item Discrete-time model
+% \end{itemize}
+% \vspace{0.2cm}
+% \begin{figure}
+% \includegraphics[width=\linewidth]{figures/screenshots/discred_time}
+% \end{figure}
+% \end{column}
+% \begin{column}{.5\linewidth}
+% \begin{itemize}
+% \item Statistical model
+% \end{itemize}
+% \vspace{0.2cm}
+% \begin{column}{.5\linewidth}
+% \begin{figure}
+% \includegraphics[width=\linewidth]{figures/screenshots/selectiv_1}
+% \end{figure}
+% \end{column}
+% \begin{column}{.5\linewidth}
+% \begin{figure}
+% \includegraphics[width=\linewidth]{figures/screenshots/selectiv_2}
+% \end{figure}
+% \end{column}
+% \end{column}
+%\end{columns}
+%\end{frame}
+
+
+\begin{frame}{Graphical User Interface}
+% \begin{figure}
+ \centering
+ \includegraphics[width = \linewidth]{figures/screenshots/gui_screenshot}
+% \end{figure}
+ %Built with DearPyGUI, talks to GR via UDP/IP.
\end{frame}
-
-
%%Tools
\end{document}
diff --git a/video/Multipath_Fading_Elevator_Speec.mkv b/video/Multipath_Fading_Elevator_Speec.mkv
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+In our semeter thesis, we have built a multipath fading demonstration platform using a software defined radio.
+
+Multipath fading is common problem that affects today's wireless devices. Multipath refers to the fact that, when a transmitter radiates a signal, some of the electromagnetic waves do not go straight to the receiver. What happens instead, is that some waves get reflected in the channel, thus taking a longer path to the receiver, and interfere destructively with eachother.
+
+This is a block diagram of our platform. The transmitter modulates the data using either QPSK or QAM. We have simulated a channel model with additive white gaussian noise, and multipath fading. The receiver's signal processing chain demodulates the data and computes the empirical bit error rate.
+
+Here we have a few pictures of our setup for the measurements. We used two USRP B210 software defined radios with a Rubidium clock generator each.
+
+And here's a screenshot of the graphical interface we built to demonstrate the effect of multipath fading. \ No newline at end of file