Research Repository

The secrecy capacity of block fading multiuser wireless networks

Chorti, Arsenia and Papadaki, Katerina and Tsakalides, Panagiotis and Poor, H Vincent (2013) The secrecy capacity of block fading multiuser wireless networks. In: 2013 International Conference on Advanced Technologies for Communications (ATC 2013), 2013-10-16 - 2013-10-18.

Full text not available from this repository.


The resilience of block fading wireless orthogonal frequency division multiple access (OFDMA) networks to passive eavesdroppers is investigated. The network secrecy capacity is evaluated in scenarios involving a base station and several terminals, some of which constitute passive eavesdroppers. Assuming a block fading Rayleigh channel, the probability of a secrecy outage during a transmission frame is evaluated with respect to a target secrecy rate τ in the following cases: (i) in the absence of any cooperation between the network nodes, and, (ii) when the full multi-user diversity is exploited both by the legitimate users as well as by the eavesdroppers. Remarkably, it is demonstrated that in a network of as few as 12 legitimate users and a single eavesdropper it is possible to transmit 1 bit/sec/Hz with a probability of secrecy outage less than 1%. Furthermore, the delay constrained secrecy capacity of this network is evaluated when the full channel state information (CSI) is available both at the base station and at all receiving nodes. A secure waterfilling scheme is discussed, satisfying a short-term power constraint. © 2013 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: International Conference on Advanced Technologies for Communications
Uncontrolled Keywords: OFDMA networks; probability of secrecy outage; block fading Gaussian channel; delay constrained secrecy capacity; secure waterfilling
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 08 Jan 2015 11:44
Last Modified: 15 Jan 2022 00:43

Actions (login required)

View Item View Item