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Preserving confidentiality in the Gaussian broadcast channel using compute-and-forward
KTH, School of Electrical Engineering (EES), Network and Systems engineering.
2017 (English)In: 2017 51st Annual Conference on Information Sciences and Systems, CISS 2017, Institute of Electrical and Electronics Engineers (IEEE), 2017, 7926077Conference 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
Institute of Electrical and Electronics Engineers (IEEE), 2017. 7926077
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-209724DOI: 10.1109/CISS.2017.7926077Scopus ID: 2-s2.0-85020204372ISBN: 9781509047802 (print)OAI: oai:DiVA.org:kth-209724DiVA: diva2:1114047
Conference
51st Annual Conference on Information Sciences and Systems, CISS 2017, Baltimore, United States, 22 March 2017 through 24 March 2017
Note

QC 20170622

Available from: 2017-06-22 Created: 2017-06-22 Last updated: 2017-06-22Bibliographically approved

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CiteExportLink to record
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  • apa
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  • asciidoc
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