On the ergodic secrecy capacity of MIMO wiretap channels with statistical CSI
2014 (English)In: Proceedings of 2014 International Symposium on Information Theory and Its Applications, ISITA 2014, 2014, 398-402 p.Conference paper (Refereed)
Wireless security has become an important issue for modern wireless networks. Due to the broadcast nature of wireless channels possibility of eavesdropping the transmission is provided for non-legitimate receivers. In the present paper, we consider a multi-antenna wiretap channel in a fast-fading environment with only statistical channel state information available at the receiver. The overall performance of such channel is characterized by the ergodic secrecy capacity, which, in general, cannot be characterized explicitly. Nevertheless, based on the assumption that the numbers of antennas at legitimate terminals and the number of eavesdroppers grow large without bound, we derive a deterministic approximation for the achievable ergodic secrecy rate under arbitrary channel inputs. The obtained large-system approximation matches well with the actual simulated secrecy rates, revealing some interesting behavior of the secrecy rates in the given scenario.
Place, publisher, year, edition, pages
2014. 398-402 p.
Antennas, Communication channels (information theory), Information dissemination, Information theory, Signal receivers, Deterministic approximation, Fast fading environments, Mimo wiretap channels, Statistical channel state informations, Statistical csi, Wire-tap channels, Wireless channel, Wireless security, Channel state information
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-168372ISI: 000366046700083ScopusID: 2-s2.0-84920540304ISBN: 9784885522925OAI: oai:DiVA.org:kth-168372DiVA: diva2:815858
2014 International Symposium on Information Theory and Its Applications, ISITA 2014; Melbourne Convention and Exhibition CentreMelbourne; Australia; 26 October 2014 through 29 October 2014
QC 201506022015-06-022015-06-022016-01-08Bibliographically approved