Secure transmission using an untrusted relay with scaled compute-and-forward

Zhijie Ren, Jasper Goseling, Jos H. Weber, Michael Gastpar

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

9 Citations (Scopus)

Abstract

A two-hop channel is considered, in which the source wants to send information to the destination while keeping the information confidential from the relay. A novel lattice chain and compute-and-forward based scheme is proposed in which the destination provides cooperative jamming. Channel state information is used at the source and the destination to scale the encoding lattices for the message and the jamming signal according to the channel gains. We compare the achievable secrecy rate of our scheme with an upper bound and with the achievable secrecy rate of other schemes. It follows that our scheme outperforms all existing schemes except in the low power region.

Original languageEnglish
Title of host publication2015 IEEE Information Theory Workshop, ITW 2015
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages5
ISBN (Electronic)9781479955268
DOIs
Publication statusPublished - 24 Jun 2015
Event2015 IEEE Information Theory Workshop, ITW 2015 - Jerusalem, Israel
Duration: 26 Apr 20151 May 2015

Conference

Conference2015 IEEE Information Theory Workshop, ITW 2015
Country/TerritoryIsrael
CityJerusalem
Period26/04/151/05/15

Keywords

  • n/a OA procedure

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