The secrecy capacity of block fading multiuser wireless networks

Arsenia Chorti, Katerina Papadaki, Panagiotis Tsakalides, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

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.

Original languageEnglish (US)
Title of host publication2013 International Conference on Advanced Technologies for Communications, ATC 2013
Pages247-251
Number of pages5
DOIs
StatePublished - 2013
Event2013 International Conference on Advanced Technologies for Communications, ATC 2013 - Ho Chi Minh, Viet Nam
Duration: Oct 16 2013Oct 18 2013

Publication series

NameInternational Conference on Advanced Technologies for Communications
ISSN (Print)2162-1039
ISSN (Electronic)2162-1020

Other

Other2013 International Conference on Advanced Technologies for Communications, ATC 2013
CountryViet Nam
CityHo Chi Minh
Period10/16/1310/18/13

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

Keywords

  • OFDMA networks
  • block fading Gaussian channel
  • delay constrained secrecy capacity
  • probability of secrecy outage
  • secure waterfilling

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  • Cite this

    Chorti, A., Papadaki, K., Tsakalides, P., & Poor, H. V. (2013). The secrecy capacity of block fading multiuser wireless networks. In 2013 International Conference on Advanced Technologies for Communications, ATC 2013 (pp. 247-251). [6698115] (International Conference on Advanced Technologies for Communications). https://doi.org/10.1109/ATC.2013.6698115