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Optimizing Secrecy Performance of Trusted RF Relay Against External Eavesdropping
Shiv Nadar Univ, India.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-3225-6495
Indian Inst Technol Jammu, India.
Shiv Nadar Univ, India.
2019 (English)In: 2019 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), IEEE , 2019Conference paper, Published paper (Refereed)
Abstract [en]

In resource allocation for secure cooperative communication systems, along with power allocation, relay placement also has equal importance in improving the system performance. In this paper, we study the joint optimization of relay placement and power allocation to minimize the secrecy outage probability (SOP) for a four-node cooperative system with a trusted randomize-and-forward relay in the presence of an external eavesdropper. Initially, we derive the expression of SOP, and then formulate an optimization problem to minimize SOP under given power budget and relay placement (RP) constraints. By providing analytical insights on power allocation (PA) between source and relay, we obtain closed form expressions of optimal PA (OPA) for a given RP that minimizes the SOP. Next, we propose a low complexity algorithm to obtain the near-optimal RP (ORP) for a given PA. Finally, we obtain optimal SOP with joint RP and PA. Numerical results present validation of analytical SOP through Monte Carlo simulations, optimal PA for a given RP, optimal RP for a given PA, and joint PA and RP for a given secrecy threshold rate. Finally, we highlight the significant performance gains achieved by the joint design over the conventional scheme.

Place, publisher, year, edition, pages
IEEE , 2019.
Series
IEEE Global Communications Conference, ISSN 2334-0983
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-168222DOI: 10.1109/GLOBECOM38437.2019.9013579ISI: 000552238602149ISBN: 978-1-7281-0962-6 (electronic)OAI: oai:DiVA.org:liu-168222DiVA, id: diva2:1459410
Conference
IEEE Global Communications Conference (GLOBECOM)
Available from: 2020-08-19 Created: 2020-08-19 Last updated: 2020-08-19

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Total: 26 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf