Change search
ReferencesLink to record
Permanent link

Direct link
Improving Physical Layer Secrecy Using Full-Duplex Jamming Receivers
Show others and affiliations
2013 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 61, no 20, 4962-4974 p.Article in journal (Refereed) Published
Abstract [en]

This paper studies secrecy rate optimization in a wireless network with a single-antenna source, a multi-antenna destination and a multi-antenna eavesdropper. This is an unfavorable scenario for secrecy performance as the system is interference-limited. In the literature, assuming that the receiver operates in half duplex (HD) mode, the aforementioned problem has been addressed via use of cooperating nodes who act as jammers to confound the eavesdropper. This paper investigates an alternative solution, which assumes the availability of a full duplex (FD) receiver. In particular, while receiving data, the receiver transmits jamming noise to degrade the eavesdropper channel. The proposed self-protection scheme eliminates the need for external helpers and provides system robustness. For the case in which global channel state information is available, we aim to design the optimal jamming covariance matrix that maximizes the secrecy rate and mitigates loop interference associated with the FD operation. We consider both fixed and optimal linear receiver design at the destination, and show that the optimal jamming covariance matrix is rank-1, and can be found via an efficient 1-D search. For the case in which only statistical information on the eavesdropper channel is available, the optimal power allocation is studied in terms of ergodic and outage secrecy rates. Simulation results verify the analysis and demonstrate substantial performance gain over conventional HD operation at the destination.

Place, publisher, year, edition, pages
2013. Vol. 61, no 20, 4962-4974 p.
Keyword [en]
Beamforming, convex optimization, full-duplex, jamming, physical-layer security, MIMO
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-139016DOI: 10.1109/TSP.2013.2269049ISI: 000324617400006ScopusID: 2-s2.0-84883785476OAI: diva2:682149

QC 20140128

Available from: 2013-12-23 Created: 2013-12-23 Last updated: 2014-01-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Ottersten, Björn
In the same journal
IEEE Transactions on Signal Processing
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 54 hits
ReferencesLink to record
Permanent link

Direct link