Energy Signal-Aided Secure Beamforming and Self-Energy Recycling in Full-Duplex Wireless-Powered Relay Networks

In this paper, the object of study is secure transmission and green energy transfer in full-duplex (FD) wireless-powered relay (WPR) secure systems, where an FD relay collects the power from radio-frequency signs and transmits the information in the face of multiple eavesdroppers. In order to improv...

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Veröffentlicht in:	Energies (Basel) Jg. 14; H. 20; S. 6497
Hauptverfasser:	Ou, Lizhen, Chen, Peipei, Luo, Xueshan, Dang, Shuping, Sun, Yuchen
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Basel MDPI AG 01.10.2021
Schlagworte:	Antennas contemporaneous wireless information and energy transfer Design Energy physical layer security power collecting Receivers & amplifiers Wireless communications Wireless networks
ISSN:	1996-1073, 1996-1073
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Abstract	In this paper, the object of study is secure transmission and green energy transfer in full-duplex (FD) wireless-powered relay (WPR) secure systems, where an FD relay collects the power from radio-frequency signs and transmits the information in the face of multiple eavesdroppers. In order to improve the efficiency and safety of the contemporaneous wireless energy and information delivery, we propose a joint energy-signal- (ES-) aided secure beamforming and time-switch scheme under the self-power circulation protocol at the relay. The question formulated in this paper is to maximize the confidentiality rate according to energy restrictions at both the relay and energy receiver. As the question is non-salient and hard to resolve directly, we transform it into two sub-problems. For the first sub-problem, a two-level optimization technique is suggested to separately gain the optimal beamforming as well as the ES covariance. The extrinsic rank is a single-variable majorization question, which can be solved by single-dimensional (1D) examination. We attain an optimal solution to the inner level by a semi-definite relaxation (SDR) technique. For the second sub-problem, we again use 1D search to solve this problem. Moreover, we prove that SDR always exists as a level-1 optimal resolution. Mathematical outcomes show that the suggested plan can achieve a considerable gain of confidentiality rate by comparison with other benchmark plans.
AbstractList	In this paper, the object of study is secure transmission and green energy transfer in full-duplex (FD) wireless-powered relay (WPR) secure systems, where an FD relay collects the power from radio-frequency signs and transmits the information in the face of multiple eavesdroppers. In order to improve the efficiency and safety of the contemporaneous wireless energy and information delivery, we propose a joint energy-signal- (ES-) aided secure beamforming and time-switch scheme under the self-power circulation protocol at the relay. The question formulated in this paper is to maximize the confidentiality rate according to energy restrictions at both the relay and energy receiver. As the question is non-salient and hard to resolve directly, we transform it into two sub-problems. For the first sub-problem, a two-level optimization technique is suggested to separately gain the optimal beamforming as well as the ES covariance. The extrinsic rank is a single-variable majorization question, which can be solved by single-dimensional (1D) examination. We attain an optimal solution to the inner level by a semi-definite relaxation (SDR) technique. For the second sub-problem, we again use 1D search to solve this problem. Moreover, we prove that SDR always exists as a level-1 optimal resolution. Mathematical outcomes show that the suggested plan can achieve a considerable gain of confidentiality rate by comparison with other benchmark plans.
Author	Dang, Shuping Ou, Lizhen Sun, Yuchen Luo, Xueshan Chen, Peipei
Author_xml	– sequence: 1 givenname: Lizhen surname: Ou fullname: Ou, Lizhen – sequence: 2 givenname: Peipei surname: Chen fullname: Chen, Peipei – sequence: 3 givenname: Xueshan surname: Luo fullname: Luo, Xueshan – sequence: 4 givenname: Shuping surname: Dang fullname: Dang, Shuping – sequence: 5 givenname: Yuchen surname: Sun fullname: Sun, Yuchen
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Cites_doi	10.1109/TWC.2014.2314654 10.1109/TWC.2018.2883563 10.1109/JSTSP.2016.2600523 10.1109/LWC.2015.2396516 10.1109/OJCOMS.2021.3102027 10.1109/LWC.2015.2445822 10.1109/TWC.2015.2395414 10.1109/ICCE-China.2017.7991073 10.1049/iet-com.2016.1371 10.3390/en14164918 10.1109/JSAC.2018.2825541 10.1109/ACCESS.2017.2691798 10.1109/ACCESS.2016.2627002 10.1109/JSAC.2014.2330193 10.1109/TVT.2016.2519339 10.1007/s11036-018-1079-y 10.1109/MSP.2010.936019 10.1109/LCOMM.2017.2672660 10.1109/ICCSE.2019.8845507 10.1109/WCSP.2015.7341300 10.1109/ICCSN.2019.8905329 10.1145/2213836.2213896 10.1109/LCOMM.2015.2513768 10.1631/FITEE.1601832 10.1049/iet-com.2015.0476 10.1016/j.comnet.2020.107176 10.1109/TVT.2017.2741491 10.1109/TVT.2016.2578313 10.1109/TWC.2013.031813.120224 10.1109/LWC.2016.2642954 10.1109/TSP.2014.2376885 10.1109/ACCESS.2018.2812180
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