On improving the robustness of physical-layer key extraction mechanisms against delay and mobility

Recently, key extraction from multipath wireless channels has been largely investigated. This paper tackles practical issues affecting the reliability of key agreement. We first analyze the effect of delay between the channel estimates on the probability of disagreement, and we propose a robust key...

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Bibliographic Details
Published in2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC) pp. 1028 - 1033
Main Authors El Hajj Shehadeh, Y., Alfandi, O., Hogrefe, D.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Channel estimation
Delay
Doppler effect
key generation
mobility
multipath channels
phase quantization
Quantization
Robustness
Signal to noise ratio
Wireless communication
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Summary:Recently, key extraction from multipath wireless channels has been largely investigated. This paper tackles practical issues affecting the reliability of key agreement. We first analyze the effect of delay between the channel estimates on the probability of disagreement, and we propose a robust key extraction mechanism against delay. Later, we study the effect of mobility and improve our key generation mechanism taking into account the decorrelation of the channel. Finally, we investigate the impact of mobility on the overall secret bit generation rate.
ISBN:1457713780
9781457713781
ISSN:2376-6492
DOI:10.1109/IWCMC.2012.6314347