From 90fe0e5a890abd70f41f9796204bf03e02ecffb2 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Wed, 11 Sep 2019 09:49:36 +0200
Subject: cccb: convert slides to 16:9 + adjust image scaling + fix typos
---
.../cellular_base_station_technology.tex | 34 +++++++++++-----------
1 file changed, 17 insertions(+), 17 deletions(-)
(limited to '2019')
diff --git a/2019/cccb-cellular_base_station_technology/cellular_base_station_technology.tex b/2019/cccb-cellular_base_station_technology/cellular_base_station_technology.tex
index 47f7cad..afb9bc5 100644
--- a/2019/cccb-cellular_base_station_technology/cellular_base_station_technology.tex
+++ b/2019/cccb-cellular_base_station_technology/cellular_base_station_technology.tex
@@ -1,4 +1,4 @@
-\documentclass[11pt]{beamer}
+\documentclass[aspectratio=169,11pt]{beamer}
\usetheme{default}
%\setbeamertemplate{frametitle}{}
\newenvironment{myline}
@@ -137,12 +137,12 @@ What do we learn from this?
\begin{frame}{Simplified Rx/Tx chain}
\begin{itemize}
\item Simplified Receiver chain:
-\digraph[scale=0.30]{rxsimple}{
+\digraph[scale=0.38]{rxsimple}{
rankdir=LR;
Antenna -> Duplexer -> RF_Filter -> LNA -> Mixer -> BB_Filter -> ADC -> PHY -> L2_L3
}
\item Simplified Transmitter chain:
-\digraph[scale=0.30]{txsimple}{
+\digraph[scale=0.38]{txsimple}{
rankdir=RL;
L2_L3 -> PHY -> DAC -> BB_Filter -> Mixer -> PA -> RF_Filter -> Duplexer -> Antenna;
}
@@ -153,16 +153,16 @@ What do we learn from this?
\begin{frame}{Even more Simplified Rx/Tx chain}
\begin{itemize}
- \item Simplified Receiver chain:
-\digraph[scale=0.40]{rxsimple2}{
+ \item Even more simplified Receiver chain:
+\digraph[scale=0.45]{rxsimple2}{
rankdir=LR;
Antenna -> Mixer [label=RF];
Mixer -> ADC [label="Analog Baseband"];
ADC -> PHY [label="Digital Baseband"];
PHY -> L2_L3 [label="Primitives"];
}
- \item Simplified Transmitter chain:
-\digraph[scale=0.40]{txsimple2}{
+ \item Even more simplified Transmitter chain:
+\digraph[scale=0.45]{txsimple2}{
rankdir=RL;
L2_L3 -> PHY [label="Primitives"];
PHY -> DAC [label="Digital Baseband"];
@@ -180,7 +180,7 @@ What do we learn from this?
\begin{columns}
\column{0.28\linewidth}
\centering
- \includegraphics[width=36mm]{RBS2206.jpg}
+ \includegraphics[width=37mm]{RBS2206.jpg}
\column{0.70\linewidth}
The traditional way of building cell sites:
\begin{itemize}
@@ -197,10 +197,10 @@ What do we learn from this?
\begin{frame}{Slightly less Classic Cell Site}
\begin{columns}
- \column{0.28\linewidth}
+ \column{0.35\linewidth}
\centering
- \includegraphics[width=36mm]{nokia_flexi.jpeg}
- \column{0.70\linewidth}
+ \includegraphics[width=49mm]{nokia_flexi.jpeg}
+ \column{0.65\linewidth}
The fist step of logical evolution:
\begin{itemize}
\item equipment becomes smaller (partial rack)
@@ -265,7 +265,7 @@ Solution: Instead of moving all equipment up the tower,
\begin{frame}{Base Station split with Radio Heads}
\begin{itemize}
\item Incredibly Simplified Receiver chain:
-\digraph[scale=0.30]{rxsimple2split}{
+\digraph[scale=0.42]{rxsimple2split}{
rankdir=LR;
Antenna -> Mixer [label=RF];
subgraph cluster_0 {
@@ -279,7 +279,7 @@ Solution: Instead of moving all equipment up the tower,
}
}
\item Incredibly Simplified Transmitter chain:
-\digraph[scale=0.30]{txsimple2split}{
+\digraph[scale=0.42]{txsimple2split}{
rankdir=RL;
subgraph cluster_0 {
label="Baseband Unit";
@@ -304,7 +304,7 @@ Solution: Instead of moving all equipment up the tower,
\end{frame}
\begin{frame}{Cell Sites with (Remote) Radio Heads}
-\includegraphics[width=92mm]{lots-of-radioheads.jpeg}
+\includegraphics[width=85mm]{lots-of-radioheads.jpeg}
{\tiny Image: Peter Schmidt @33dBm}
\end{frame}
@@ -417,7 +417,7 @@ As digital baseband samples are transmitted over fiber optics
\end{frame}
\begin{frame}{Antennas with many ports}
-\includegraphics[width=85mm]{multiport-antenna.jpg}
+\includegraphics[width=80mm]{multiport-antenna.jpg}
\end{frame}
\begin{frame}{Where will it end?}
@@ -479,7 +479,7 @@ As digital baseband samples are transmitted over fiber optics
\begin{frame}{Classic 3G back-haul}
\begin{itemize}
\item 3G (UMTS) was specified when ATM was the next hot thing
- \item back-haul of eNodeB is done via ATM
+ \item back-haul of NodeB is done via ATM
\item in reality, often Inverse ATM Multiplex (ATM over 4xE1 ISDN)
\item 3GPP at least later adapted specs for IP based transport
\begin{itemize}
@@ -582,7 +582,7 @@ As digital baseband samples are transmitted over fiber optics
\begin{itemize}
\item \url{http://cpri.info/}
\item FlexiWCDMA teardown: \url{https://www.youtube.com/watch?v=d5xT4p9FXIw}
- \item Ericsson RBS600 teardown: \url{https://www.youtube.com/watch?v=qO127zY3voE}
+ \item Ericsson RBS6000 teardown: \url{https://www.youtube.com/watch?v=qO127zY3voE}
\end{itemize}
\end{frame}
--
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