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  • Andersson, Mattias, et al. (author)
  • Secure key agreement over reciprocal fading channels in the low SNR regime
  • 2013
  • In: 2013 IEEE  14th Workshop on Signal Processing Advances in Wireless Communications, SPAWC. - : IEEE. - 9781467355773 ; , s. 674-678
  • Conference paper (peer-reviewed)abstract
    • We study the low SNR scaling of the non-coherent secret-key agreement capacity over a reciprocal, block-fading channel. For the restricted class of strategies, where one of the nodes is constrained to transmit pilot-only symbols, we show that the secret-key capacity scales as SNR ·log T if T ≤ 1/SNR, where T denotes the coherence period, and as SNR·log(1/SNR) otherwise. Our upper bound is inspired by the genie-aided argument of Borade and Zheng (IT-Trans 2010). Our lower bound is based on bursty communication, channel training, and secret message transmission.
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Type of publication
conference paper (1)
Type of content
peer-reviewed (1)
Author/Editor
Andersson, Mattias (1)
Skoglund, Mikael (1)
Khisti, A. (1)
University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Engineering and Technology (1)
Year
2013 (1)

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