diff --git a/competition/tex/chapters/abstract.tex b/competition/tex/chapters/abstract.tex
index 7bf986f..27de98e 100644
--- a/competition/tex/chapters/abstract.tex
+++ b/competition/tex/chapters/abstract.tex
@@ -1,4 +1,9 @@
 \begin{abstract}
-Abstract
+This technical description gives an short overview of the indoor localisation and navigation system developed at the University of Applied Sciences W\"urzburg-Schweinfurt and the University of Siegen, Germany. 
+A highly modular system fusing different sensors, namely Wi-Fi, iBeacons, barometer, step- and turn-detection, will be shown. 
+Additionally extended knowledge provided by prior and past data is incorporate by natural walking paths and smoothing. 
+The system performs all calculations in real time on a commercial smartphone using a high number of particles. 
+
+
 \end{abstract}
 %\begin{IEEEkeywords} indoor positioning, Monte Carlo smoothing, particle smoothing, sequential Monte Carlo\end{IEEEkeywords}
diff --git a/competition/tex/chapters/introduction.tex b/competition/tex/chapters/introduction.tex
index 124f278..d95292a 100644
--- a/competition/tex/chapters/introduction.tex
+++ b/competition/tex/chapters/introduction.tex
@@ -1,5 +1,9 @@
 \section{System Overview}
 
+The navigation system is based on our previous works, primarily on the approach presented in \cite{ebner-15}. 
+For this, we have been awarded the best overall paper award at IPIN 2015 in Banff, Canada. 
+
+
 \begin{itemize}
 	\item Hinfuehren zum System
 	\item aus welchen arbeiten fuegt sich das system zusammen?