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Artificial noise assisted secure interference networks with wireless power transfer

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Zhao, Nan, Cao, Yang, Richard Yu, F. , Chen, Yunfei, Jin, Minglu and Leung, Victor (2018) Artificial noise assisted secure interference networks with wireless power transfer. IEEE Transactions on Vehicular Technology, 67 (2). doi:10.1109/TVT.2017.2700475

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Official URL: http://doi.org/10.1109/TVT.2017.2700475

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Abstract

Interference alignment (IA) is a remarkable technique to manage interference, and artificial noise (AN) can be utilized to combat one main threat of security, passive eavesdropping. Nevertheless, in the existing schemes AN is only eliminated at each legitimate receiver, which is a waste of energy. In this paper, we propose an AN assisted IA scheme with wireless power transfer (WPT). In the proposed scheme, AN is generated by each transmitter along with data streams, which can disrupt the eavesdropping without introducing any additional interference. Due to the fact that the transmit power of AN should be high enough to ensure the security, energy harvesting (EH) is also performed in the scheme. A power splitter is equipped at each receiver, which can divide the received signal, including desired signal, interference and AN, into two parts: one for information decoding (ID) and the other for EH. To optimize the antieavesdropping performance, the total transmit power of AN is maximized by jointly optimizing the information transmit power and the coefficient of power splitting, with the requirements of signal-to-interference-plus-noise ratio (SINR) and harvested power satisfied. Due to the non-convex nature of the problem, a suboptimal solution is also derived to calculate the closed-form solutions with extremely low computational complexity. Extensive simulation results are presented to show the effectiveness of the proposed scheme.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Wireless power transmission, Wireless communication systems -- Interference
Journal or Publication Title: IEEE Transactions on Vehicular Technology
Publisher: IEEE
ISSN: 0018-9545
Official Date: February 2018
Dates:
DateEvent
February 2018Published
2 May 2017Available
7 April 2017Accepted
Volume: 67
Number: 2
DOI: 10.1109/TVT.2017.2700475
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC)
Grant number: Grant 61671101 (NSFC)

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