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Interference Exploitation Based Secure Transmission for Distributed Antenna Systems

Wei, Z; Masouros, C; Liu, F; (2019) Interference Exploitation Based Secure Transmission for Distributed Antenna Systems. In: (Proceedings) ICC 2019 - 2019 IEEE International Conference on Communications (ICC). IEEE: Shanghai, China. Green open access

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Abstract

Distributed antenna (DA) is considered as a strong alternative to conventional centralized multiple-input multiple-output (MIMO), to provide a greener and user-centric network structure. However, physical layer (PHY) security becomes more challenging in DA systems because of the proximity to the transmitters. In this paper, we jointly optimize DA activation/deactivation and secure precoding to minimize the total power consumption, subjected to legitimate user's (LU) quality-of-service (QoS) and PHY security constraints against potential eavesdroppers (Eves). A practical scenario is considered, where channel state information (CSI) of all the nodes can only be imperfectly obtained. In the presence of infinite probabilities of CSI uncertainties, a deterministic robust based algorithm is designed to always satisfy LU's QoS requirement and address PHY security constraints against Eves. Moreover, essentially different from existing artificial noise (AN)-aided secure transmission schemes, where AN' leakage effect at LU needs to be suppressed, we utilize AN as a beneficial element at LU end while keeping it destructive at potential Eves. Simulation results verify that, the proposed algorithm incurs much lower power consumption compared to its benchmarks, thanks to the additional degrees of freedom of antenna selection and utilizing constructive AN. Last but not least, by adaptively facilitating DA activation/deactivation, the proposed algorithm addresses a user-centric network structure, which is more flexible over the conventional centralized MIMO systems.

Type: Proceedings paper
Title: Interference Exploitation Based Secure Transmission for Distributed Antenna Systems
Event: ICC 2019 - 2019 IEEE International Conference on Communications (ICC)
ISBN-13: 9781538680889
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC.2019.8761728
Publisher version: https://doi.org/10.1109/ICC.2019.8761728
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Instruments , Security , IEEE Standards , Registers , System-on-chip , Clocks , Complexity theory
UCL classification: UCL
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/10081092
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