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Preserving Confidentiality in The Gaussian Broadcast Channel Using Compute-and-Forward
Boston Univ, Boston, MA 02215 USA.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
KTH Royal Inst Technol, Stockholm, Sweden.
2017 (English)In: 2017 51st Annual Conference on Information Sciences and Systems (CISS), IEEE, 2017Conference paper, Published paper (Refereed)
Abstract [en]

We study the transmission of confidential messages across a wireless broadcast channel with K > 2 receivers and K helpers. The goal is to transmit all messages reliably to their intended receivers while keeping them confidential from the unintended receivers. We design a codebook based on nested lattice structure, cooperative jamming, lattice alignment, and i.i.d. coding. Moreover, we exploit the asymmetric compute-and-forward decoding strategy to handle finite SNR regimes. Unlike previous alignment schemes, our achievable rates are attainable at any finite SNR value. Also, we show that our scheme achieves the optimal sum secure degrees of freedom of 1 for the K-receiver Gaussian broadcast channel with K confidential messages and K helpers.

Place, publisher, year, edition, pages
IEEE, 2017.
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:uu:diva-377749DOI: 10.1109/CISS.2017.7926077ISI: 000404163300015ISBN: 978-1-5090-4780-2 (electronic)OAI: oai:DiVA.org:uu-377749DiVA, id: diva2:1291610
Conference
51st Annual Conference on Information Sciences and Systems (CISS), Baltimore, MD, March 22-24, 2017
Available from: 2019-02-25 Created: 2019-02-25 Last updated: 2019-02-25Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association
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Language
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  • nn-NO
  • nn-NB
  • sv-SE
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Output format
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  • asciidoc
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