Secrecy evaluation in physical layer secure systems from uItra-wide band channel measurements
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Keywords
Secrecy ; Cryptography ; Physical layer security ; Channel measurements ; Wireless communications ; Wiretap channels ; Ultra-wide bandAbstract
The rapid expansion of wireless communication technologies has introduced new challenges in securing data transmissions against eavesdropping and unauthorized access. This thesis investigates the potential of Physical Layer Security (PLS) as a complementary approach to traditional cryptographic methods, leveraging the unique characteristics of wireless channels to enhance communication confidentiality. By combining real world Ultra Wideband (UWB) channel measurements with theoretical modeling, the study evaluates achievable secrecy metrics, including Secrecy Capacity and Secrecy Rate, under various indoor and outdoor scenarios. Using Humatics P442 UWB radios and advanced post-processing techniques, the present work quantifies the impact of enviromental factors, interference, and multipath fading on secure communication. The findings demonstrate the effectiveness of UWB technology in achieving robust PLS, particularly in scenarios where its high resolution and wide bandwidth mitigate eavesdropping risks. This work not only bridges the gap between theory and practical implementation but also provides valuable insights into optimizing secure wireless communication systems, paving the way for future advancements in PLS methodologies.
Postgraduate Studies Programme
Ασφάλεια Ψηφιακών ΣυστημάτωνDepartment
Σχολή Τεχνολογιών Πληροφορικής και Επικοινωνιών. Τμήμα Ψηφιακών ΣυστημάτωνNumber of pages
90Language
EnglishCollections
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Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα
Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα