Secure MISO-NOMA Transmission With Artificial Noise

This correspondence studies a new secrecy beamforming (SBF) scheme for multiple-input single-output non-orthogonal multiple access (MISO-NOMA) systems. In particular, the proposed SBF scheme efficiently exploits artificial noise to protect the confidential information of two NOMA assisted legitimate...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2018-07, Vol.67 (7), p.6700-6705
Main Authors: Lv, Lu, Ding, Zhiguo, Ni, Qiang, Chen, Jian
Format: Article
Language:English
Subjects:
Array signal processing
artificial noise
Beamforming
Codes
Eavesdropping
Fading channels
Interference
MISO (control systems)
multiple-input single-output
NOMA
Non-orthogonal multiple access
Nonorthogonal multiple access
physical layer security
Signal to noise ratio
Silicon carbide
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Summary:This correspondence studies a new secrecy beamforming (SBF) scheme for multiple-input single-output non-orthogonal multiple access (MISO-NOMA) systems. In particular, the proposed SBF scheme efficiently exploits artificial noise to protect the confidential information of two NOMA assisted legitimate users, such that only the eavesdropper's channel is degraded. Considering a practical assumption of the imperfect worst-case successive interference cancellation which is a unique character in employing NOMA transmission, we derive a closed-form expression for the secrecy outage probability to characterize the secrecy performance. After that, we carry out an analysis of secrecy diversity order to provide further insights about secure MISO-NOMA transmission. Numerical results are provided to demonstrate the accuracy of the developed analytical results and the effectiveness of the proposed SBF scheme.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2018.2811733