Physical-Layer Key Generation Supported by RECAP Antenna Structures
Konferenz: SCC 2013 - 9th International ITG Conference on Systems, Communication and Coding
21.01.2013 - 24.01.2013 in München, Deutschland
Tagungsband: SCC 2013
Seiten: 6Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Filip, Alexandra; Mehmood, Rashid; Wallace, Jon; Henkel, Werner (Jacobs University Bremen, Electrical Engineering and Computer Science, Center for Advanced Systems Engineering (CASE), Bremen, Germany)
Physical-layer key generation makes use of the reciprocity of wireless time-division duplex (TDD) channels. Both transmission directions experience the same channel, apart from independent noise and quantization effects. The randomness of a mobile channel ensures a certain regeneration rate of keys. Reconfigurable antennas, so-called RECAPs, offer a possibility to also provide randomness in the extreme case when both transmitter and receiver are not moving, even have a line-ofsight connection. RECAP structures and the steps for obtaining a reliably identical and secure key on both sides are discussed.