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Constructive Interference Based Secure Precoding: A New Dimension in Physical Layer Security

Khandaker, MRA; Masouros, C; Wong, K-K; (2018) Constructive Interference Based Secure Precoding: A New Dimension in Physical Layer Security. IEEE Transactions on Information Forensics and Security , 13 (9) 10.1109/TIFS.2018.2815541. Green open access

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Abstract

Conventionally, interference and noise are treated as catastrophic elements in wireless communications. However, it has been shown recently that exploiting known interference constructively can even contribute to signal detection ability at the receiving end. This paper exploits this concept to design artificial noise (AN) beamformers constructive to the intended receiver (IR) yet keeping AN disruptive to possible eavesdroppers (Eves). The scenario considered here is a multiple-input single-output (MISO) wiretap channel with multiple eavesdroppers. Both perfect and imperfect channel information have been considered. The main objective is to improve the receive signal-to-interference and noise ratio (SINR) at IR through exploitation of AN power in an attempt to minimize the total transmit power, while confusing the Eves. Numerical simulations demonstrate that the proposed constructive AN precoding approach yields superior performance over conventional AN schemes in terms of transmit power as well as symbol error rate (SER).

Type: Article
Title: Constructive Interference Based Secure Precoding: A New Dimension in Physical Layer Security
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TIFS.2018.2815541
Publisher version: http://doi.org/10.1109/TIFS.2018.2815541
Language: English
Additional information: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: cs.IT, cs.IT, math.IT
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1535168
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