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Non-regenerative two-hop wiretap channels using interference neutralization
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
2012 (English)Conference paper, Published paper (Other academic)
Abstract [en]

In this paper, we analyze the achievable secrecy rates in the two-hop wiretap channel with four nodes, where the transmitter and the receiver have multiple antennas while the relay and the eavesdropper have only a single antenna each. The relay is operating in amplify-and-forward mode and all the channels between the nodes are known perfectly by the transmitter. We discuss different transmission and protection schemes like artificial noise (AN). Furthermore, we introduce interference neutralization (IN) as a new protection scheme. We compare the different schemes regarding the high-SNR slope and the high-SNR power offset and illustrate the performance by simulation results. It is shown analytically as well as by numerical simulations that the high SNR performance of the proposed IN scheme is better than the one of AN.

Place, publisher, year, edition, pages
2012. 258-263 p.
Keyword [en]
Array signal processing, Interference, Receivers, Relays, Signal to noise ratio, Transmitters, Vectors, Secrecy rate, amplify-and-forward, artificial noise, interference neutralization, two-hop wiretap channel
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-117609DOI: 10.1109/WIFS.2012.6412659ISI: 000314476200044OAI: oai:DiVA.org:kth-117609DiVA: diva2:602264
Conference
Information Forensics and Security (WIFS), 2012 IEEE International Workshop on
Note

QC 20130521

Available from: 2013-01-31 Created: 2013-01-31 Last updated: 2013-05-21Bibliographically approved

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Ottersten, Björn

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  • apa
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • text
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