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(-)

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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