IEEE communications letters, 2014-01, Vol.18 (1), p.26-29
2014
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Details
- Autor(en) / Beteiligte
- Titel
- Secret Key Agreement by LLR Thresholding and Syndrome Feedback over AWGN Channel
- Ist Teil von
- IEEE communications letters, 2014-01, Vol.18 (1), p.26-29
- Ort / Verlag
- New York, NY: IEEE
- Erscheinungsjahr
- 2014
- Quelle
- IEEE Electronic Library (IEL)
- Beschreibungen/Notizen
- In this paper we propose novel advantage distillation and reconciliation approaches for secret key agreement (SKA) over additive white Gaussian noise (AWGN) (possibly fading) channels, using binary phase shift keying (BPSK) constellations. For advantage distillation Bob selects bits having an absolute log-likelihood ratio (LLR) larger than some threshold. For reconciliation, Alice transmits the syndrome of the selected bits with respect to a globally pre-shared forward error correcting (FEC) code. We show that the syndrome transmission does not diminish the advantage of Bob over Eve on the key knowledge, thus being an efficient solution. For the proposed scheme we derive both a lower bound on the achievable secret key rate with ideal wiretap coding, and the effective throughput achieved by using practical codes.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1089-7798eISSN: 1558-2558DOI: 10.1109/LCOMM.2013.112513.131744Titel-ID: cdi_pascalfrancis_primary_28168824
- Format
- –
- Schlagworte
- Additive white Gaussian noise channel, Applied sciences, Automatic repeat request, AWGN channels, Coding, codes, Cryptography, Exact sciences and technology, Fading, Information, signal and communications theory, Modulation, demodulation, Noise, Parity check codes, physical layer security, secret key agreement, Signal and communications theory, Systems, networks and services of telecommunications, Telecommunications, Telecommunications and information theory, Throughput, Transmission and modulation (techniques and equipments), Vectors