Secure communication via untrusted switchable decode-and-forward relay


Furqan H. M., Hamamreh J., ARSLAN H.

13th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2017, Valencia, Spain, 26 - 30 June 2017, pp.1333-1337 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/iwcmc.2017.7986478
  • City: Valencia
  • Country: Spain
  • Page Numbers: pp.1333-1337
  • Keywords: Phy-security, jamming, untrusted relay, secure DAF
  • Istanbul Medipol University Affiliated: Yes

Abstract

In this paper, a practical power efficient technique is proposed for an untrusted decode-and-forward (DAF) based cooperative communication system to provide secure communication between the source and the destination. More specifically, a DAF relay, called switchable DAF (sDAF), is designed in such a way that it can be switched to amplify-and-forward (AAF) in certain predefined situations. The algorithm is based on destination-assisted jamming and comprised of two phases. The first phase securely shares the random manipulating sequence (RMS) through an untrusted relay, while the second phase uses this RMS for secure communication through untrusted relay. This algorithm not only provides secrecy, but also enhances the power efficiency as compared to other destination-assisted jamming techniques.