Rate Adaptation for Secure HARQ Protocols

Abstract : This paper investigates secure transmission using HARQ protocol when the encoder only knows the statistics of the channel-state. We analyze the tradeoff between reliability and secrecy probabilistic guarantees. The conventional approach of ensuring the secrecy via introduction of dummy-message is followed. However, unlike the previous works on this subject, we design a coding strategy tailored to HARQ by splitting the dummy-message rate over several rate parameters. These additional degrees of freedom improve the matching between the dummy-message rates and the realizations of the eavesdropper channels. We evaluate the performance in terms of secrecy outage probability, connection outage probability and secrecy throughput. For Rayleigh fading channel, the splitting of the dummy-message rate provides higher secrecy throughput and lower expected duration/average delay.
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Pré-publication, Document de travail
submitted to IEEE Transactions on Information Forensics and Security, november 28th, 2016. 2017
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Soumis le : lundi 13 novembre 2017 - 11:47:08
Dernière modification le : mardi 14 novembre 2017 - 01:11:37

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  • HAL Id : hal-01404320, version 2

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Maël Le Treust, Leszek Szczecinski, Fabrice Labeau. Rate Adaptation for Secure HARQ Protocols. submitted to IEEE Transactions on Information Forensics and Security, november 28th, 2016. 2017. 〈hal-01404320v2〉

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