Supporting PHY-layer security in multi-link wireless networks using friendly jamming

Rashad Eletreby, Hanif Rahbari, Marwan Krunz

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

2 Scopus citations

Abstract

Friendly jamming is a PHY-layer technique used to secure wireless communications. Unlike previous efforts that fix the placement of the friendly jamming devices, in this paper we consider small- scale multi-link wireless networks, e.g., peer-to- peer or multihop, and jointly optimize the powers and locations of the friendly jamming devices so as to minimize the total jamming power while simultaneously achieving a given secrecy constraint. We use distributed MIMO techniques and incorporate the necessary conditions to ensure nullification of the friendly jamming signals at legitimate receivers. Two optimization strategies are explored: per-link and network-wide. Our optimization framework is based on formulating a signomial programming problem using condensation techniques to approximate the problem as a geometric program, which can then be transformed into a convex problem. We also consider the secrecy-aware routing problem for multihop networks and propose a routing metric based on the total jamming power along the path. Simulations show that our proposed schemes outperform previous schemes in terms of energy efficiency (55%-99% power saving). Moreover, our formulation ensures protecting legitimate transmissions by nullifying friendly jamming signals at legitimate receivers.

Original languageEnglish (US)
Title of host publication2015 IEEE Global Communications Conference, GLOBECOM 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479959525
DOIs
StatePublished - 2015
Event58th IEEE Global Communications Conference, GLOBECOM 2015 - San Diego, United States
Duration: Dec 6 2015Dec 10 2015

Publication series

Name2015 IEEE Global Communications Conference, GLOBECOM 2015

Other

Other58th IEEE Global Communications Conference, GLOBECOM 2015
CountryUnited States
CitySan Diego
Period12/6/1512/10/15

Keywords

  • Friendly jamming
  • Optimal placement
  • PHY-layer security
  • Secure routing
  • Signomial programming

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

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