Full Text:   <956>

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CLC number: TN929.5

On-line Access: 2020-11-13

Received: 2020-02-21

Revision Accepted: 2020-06-27

Crosschecked: 2020-09-16

Cited: 0

Clicked: 2306

Citations:  Bibtex RefMan EndNote GB/T7714


Wei-min Hou


Qing-shan Tang


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Frontiers of Information Technology & Electronic Engineering  2020 Vol.21 No.11 P.1651-1660


Secure analysis on artificial-noise-aided simultaneous wireless information and power transfer systems

Author(s):  Wei-min Hou, Qing-shan Tang

Affiliation(s):  School of Information Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; more

Corresponding email(s):   cstqs001@126.com

Key Words:  Artificial noise, Multi-antenna systems, Secrecy outage probability, Simultaneous wireless information and power transfer

Wei-min Hou, Qing-shan Tang. Secure analysis on artificial-noise-aided simultaneous wireless information and power transfer systems[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(11): 1651-1660.

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A1 - Wei-min Hou
A1 - Qing-shan Tang
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DOI - 10.1631/FITEE.2000083

In this paper, we investigate the secrecy outage performance in simultaneous wireless information and power transfer (SWIPT) systems taking artificial noise assistance into account. Multiple antennas in the source and a single antenna in both the legitimate receiver and the eavesdropper are assumed. Specifically, the transmitted signal at the source is composed of two parts, where the first part is the information symbols and the other is the noise for the eavesdropper. To avoid making noise in the legitimate receiver, these two parts in the transmitted signals are modulated into two orthogonal dimensions according to the instantaneous channel state between the source and the legitimate receiver. We derive an approximate closed-form expression for the secrecy outage probability (SOP) by adopting the Gauss-Laguerre quadrature (GLQ) method, where the gap between the exact SOP and our approximate SOP converges with increase of the summation terms in the GLQ. To obtain the secrecy diversity order and secrecy array gain for the considered SWIPT system, the asymptotic result of the SOP is also derived. This is tight in the high signal-to-noise ratio region. A novel and robust SOP approximation is also analyzed given a small variance of the signal-to-interference-plus-noise ratio at the eavesdropper. Some selected Monte-Carlo numerical results are presented to validate the correctness of the derived closed-form expressions.





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