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Erklärung}

Hiermit erkläre ich, dass ich diese Abschlussarbeit selbständig verfasst
habe, keine anderen als die angegebenen Quellen/Hilfsmittel verwendet
habe und alle Stellen, die wörtlich oder sinngemäß aus veröffentlichten
Schriften entnommen wurden, als solche kenntlich gemacht habe. Darüber
hinaus erkläre ich, dass diese Abschlussarbeit nicht, auch nicht auszugsweise,
bereits für eine andere Prüfung angefertigt wurde.

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Ort, Datum \\(Place, Date)
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Unterschrift \\(Signature)
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Acknowledgment}

I would like to thank my supervisors Konrad Meier and Dennis Wehrle for their 
help and encouragement during the thesis. Besides the help from my supervisors I
would like to thank my family and friends who supported me through my master's degree, and 
the entire Communication Systems department for their support, free coffee and
to Prof. Dr. Gerhard Schneider for making all the required hardware available. I would like
to thank Prof. Dr. Christian Schindelhauer for writing the recommendation letter so that the DAAD
could extend my scholarship and stay in Freiburg.
I would like to thank my friend Mirza Hamza from the Telecommunications department on the faculty
of Electrical Engineering in Sarajevo for proofreading the AGPS chapter.
I would like to thank Sebastian Schmelzer for
his LaTeX tips, Michael Neves Pereira and Jonathan Bauer for lending me their cell
phones to test my localization system as well as Johan Latocha for patiently explaining
words I did not understand in the German language and for showing me Inkscape. 
I would like to thank Richard Zahoransky 
for the helpful discussions about various GSM topics. Thanks to Holger Hans Peter Freyther 
as well, who gave me tips on how to modify OpenBSC to make an independent data channel interface
with a cell phone. Things which have not been done before
are always intellectually seductive and this kept me motivated and working during the tough
periods.
 
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