Karystinos GeorgiosΚαρυστινος ΓεωργιοςKosta AntzelaΚωστα Αντζελα2024-10-312024-10-3120152015-01-13Άντζελα Κώστα, "Κωδικοποίηση διαύλου για την αποφυγή υποκλοπών", Διπλωματική Εργασία, Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών Υπολογιστών, Πολυτεχνείο Κρήτης, Χανιά, Ελλάς, 2015Antzela Kosta, "Coding for the wiretap channel", Diploma Work, School of Electronic and Computer Engineering, Technical University of Crete, Chania, Greece, 2015https://dspace.library.tuc.gr/handle/123456789/579In this work we consider the problem of achieving information-theoretic security with practical coding complexity. Specifically, we consider a transmitter, a receiver, and an eavesdropper where the communication channels between the transmitter and the receiver and between the transmitter and the eavesdropper are both binary erasure channels. The objective is the development of a practical coding scheme that attains maximum transmission rate between the transmitter and the receiver and, simultaneously, complete protection of the transmitted data from the eavesdropper. We utilize polar codes which are known to achieve the capacity of any symmetric binary-input discrete memoryless channel. We focus on the binary erasure channel and present the pertinent polar encoding and decoding algorithms. Finally, we show how polar coding can be used for the wire-tap binary erasure channel, achieving maximum transmission rate and complete protection.2.1 megabytesenhttp://creativecommons.org/licenses/by/4.0/Data encoding (Computer science)Encryption of data (Computer science)data encryption computer sciencedata encoding computer scienceencryption of data computer scienceΚωδικοποίηση καναλιούCommunication systems, WirelessWireless data communication systemsWireless information networksWireless telecommunication systemswireless communication systemscommunication systems wirelesswireless data communication systemswireless information networkswireless telecommunication systemsComputer privacyComputer system securityComputer systems--Security measuresComputers--Security measuresElectronic digital computers--Security measuresSecurity of computer systemscomputer securitycomputer privacycomputer system securitycomputer systems security measurescomputers security measureselectronic digital computers security measuressecurity of computer systemsΔιπλωματική Εργασία