Enhancing secrecy by full-duplex antenna selection in cognitive networks

Conference item

We consider an underlay cognitive network with secondary users that support full-duplex communication. In this context, we propose the application of antenna selection at the secondary destination node to improve the secondary user secrecy performance. Antenna selection rules for cases where exact and average knowledge of the eavesdropping channels are investigated. The secrecy outage probabilities for the secondary eavesdropping network are analyzed, and it is shown that the secrecy performance improvement due to antenna selection is due to coding gain rather than diversity gain. This is very different from classical antenna selection for data transmission, which usually leads to a higher diversity gain. Numerical simulations are included to verify the performance of the proposed scheme.

Authors: Chen, G; Coon, J

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: IEEE
• Host title: 2017 IEEE Symposium on Computers and Communications (ISCC)
• Journal: 2017 IEEE Symposium on Computers and Communications (ISCC)
• Pages: 540-545
• Publication date: 2017-09-04
• Acceptance date: 2017-03-31
• DOI: 10.1109/ISCC.2017.8024584
• ISSN: 1530-1346
• ISBN: 9781538616291
• Keywords: cognitive radio; full-duplex; physical layer security; antenna selection