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Secure key agreement over reciprocal fading channels in the low SNR regime
-
- Andersson, Mattias (author)
- KTH,Kommunikationsteori,ACCESS Linnaeus Centre
- Khisti, A. (author)
-
- Skoglund, Mikael (author)
- KTH,Kommunikationsteori,ACCESS Linnaeus Centre
- (creator_code:org_t)
- IEEE, 2013
- 2013
- English.
- In: 2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications, SPAWC. - : IEEE. - 9781467355773 ; , s. 674-678
- Conference paper (peer-reviewed)
Abstract
Subject headings
Close
- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Block fading channel
- Channel trainings
- Key agreement
- Low-snr regimes
- Lower bounds
- Secret messages
- Secret-key agreements
- Upper Bound
- Fading channels
- Signal processing
- Testbeds
- Wireless telecommunication systems
- Signal to noise ratio
Publication and Content Type
- ref (subject category)
- kon (subject category)
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