Physical Layer Authentication over an OFDM Fading Wiretap Channel

Paolo Baracca; Nicola Laurenti; Stefano Tomasin

1st International ICST Workshop on Secure Wireless Networks

Research Article

Physical Layer Authentication over an OFDM Fading Wiretap Channel

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.4108/icst.valuetools.2011.245789,
    author={Paolo Baracca and Nicola Laurenti and Stefano Tomasin},
    title={Physical Layer Authentication over an OFDM Fading Wiretap Channel},
    proceedings={1st International ICST Workshop on Secure Wireless Networks},
    publisher={ACM},
    proceedings_a={SECURENETS},
    year={2012},
    month={6},
    keywords={OFDM; physical layer security; authentication; wiretap channel; channel estimation},
    doi={10.4108/icst.valuetools.2011.245789}
}

Paolo Baracca
Nicola Laurenti
Stefano Tomasin
Year: 2012
Physical Layer Authentication over an OFDM Fading Wiretap Channel
SECURENETS
ICST
DOI: 10.4108/icst.valuetools.2011.245789

Paolo Baracca¹, Nicola Laurenti¹^,*, Stefano Tomasin¹

1: Department of Information Engineering - University of Padova

*Contact email: nil@dei.unipd.it

Abstract

Precise channel estimation at the physical layer allows to authenticate the source of a message in a wireless environment without the need of a pre-shared secret key based on the rapid spatial decorrelation of the channel. We consider the authentication scheme proposed by Xiao et al. and modify to suit a wiretap environment with orthogonal frequency division multiplexing (OFDM) modulation and fading channels. By formulating a nearly optimal attack strategy, and allowing some correlation among the channels, we evaluate the robustness of the scheme against challenging conditions and discuss the choice of system parameters.

Keywords: OFDM; physical layer security; authentication; wiretap channel; channel estimation

Published: 2012-06-26
Publisher: ACM

: http://dx.doi.org/10.4108/icst.valuetools.2011.245789