Achieving full secure degrees-of-freedom for the MISO wiretap channel with an unknown eavesdropper

Mohaned Chraiti, Ali Ghrayeb, Chadi Assi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, we consider the achievable secure degrees-of-freedom (sdof) for the multiple-input single-output (MISO) wiretap channel with an unknown Eavesdropper's channel state information (CSI). The underlying system model comprises three nodes: a multi-antenna transmitter (Alice), a single-antenna receiver (Bob) and a single-antenna eavesdropper (Eve). Recent studies have shown that the achievable sdof in the sense of strong secrecy is zero when Eve's number of antennas is equal or more than Bob's number of antennas, which applies to the scenario considered in this paper. Moreover, using artificial noise, which deemed to be the only possible strategy to degrade Alice-Eve's channel when Eve's CSI is unknown, may no longer be efficient due to the recently introduced methods for managing interference in a one-dimensional space (e.g., real interference alignment). In this paper, we propose a novel precoding technique and a coding strategy that together achieve full sdof in the sense of strong secrecy without knowing Eve's CSI and without using artificial noise. The proposed precoding method uses the CSI of the Alice-Bob channel in a nonlinear fashion, which makes it difficult for Eve to decode even when Eve has the CSI of all channels, whereas the proposed coding scheme ensures strong secrecy.

Original languageEnglish
Title of host publication2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages997-1001
Number of pages5
ISBN (Electronic)9781509045457
DOIs
Publication statusPublished - 19 Apr 2017
Event2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Washington, United States
Duration: 7 Dec 20169 Dec 2016

Other

Other2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016
CountryUnited States
CityWashington
Period7/12/169/12/16

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Keywords

  • Secure degrees-of-freedom
  • Strong secrecy
  • Unknown eavesdropper
  • Wiretap channel

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Cite this

Chraiti, M., Ghrayeb, A., & Assi, C. (2017). Achieving full secure degrees-of-freedom for the MISO wiretap channel with an unknown eavesdropper. In 2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Proceedings (pp. 997-1001). [7905991] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GlobalSIP.2016.7905991