Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT
In this paper, the optimal beamforming problem of multi-input single-output (MISO) cognitive radio (CR) downlink networks with simultaneous wireless information and power transfer is studied. Due to the nonconvexity of the objective function, the considered nonconvex optimization problem is firstly...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2021/6378715 |
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| _version_ | 1832551961025576960 |
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| author | Liang Xue Yao Ma Miao Zhang Wanqiang Qin Jin-Long Wang Yazhou Wu |
| author_facet | Liang Xue Yao Ma Miao Zhang Wanqiang Qin Jin-Long Wang Yazhou Wu |
| author_sort | Liang Xue |
| collection | DOAJ |
| description | In this paper, the optimal beamforming problem of multi-input single-output (MISO) cognitive radio (CR) downlink networks with simultaneous wireless information and power transfer is studied. Due to the nonconvexity of the objective function, the considered nonconvex optimization problem is firstly transformed to an equivalent subtraction problem and then an approximated convex optimization problem is obtained by using the successive convex approximation (SCA). When the instantaneous channel state information (CSI) of the eavesdropping link is unknown to the legitimate transmitter, another interruption-constrained energy efficiency optimization problem is proposed and the Bernstein-type inequality (BTI) is used to conservatively approximate the probability constraint. The paper proposes a two-level iterative algorithm based on Dinkelbach to find the optimal solution of the EE maximization problem. Numerical results validate the effectiveness and convergence of the proposed algorithm. |
| format | Article |
| id | doaj-art-84730f04de1b48a7ab3eeb2c16b3beb7 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-84730f04de1b48a7ab3eeb2c16b3beb72025-02-03T05:59:59ZengWileyInternational Journal of Antennas and Propagation1687-58772021-01-01202110.1155/2021/6378715Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPTLiang Xue0Yao Ma1Miao Zhang2Wanqiang Qin3Jin-Long Wang4Yazhou Wu5School of Information and Electrical EngineeringSchool of Information and Electrical EngineeringSchool of Information Science and EngineeringSchool of Information and Electrical EngineeringSchool of Electrical Engineering and AutomationSchool of Information and Electrical EngineeringIn this paper, the optimal beamforming problem of multi-input single-output (MISO) cognitive radio (CR) downlink networks with simultaneous wireless information and power transfer is studied. Due to the nonconvexity of the objective function, the considered nonconvex optimization problem is firstly transformed to an equivalent subtraction problem and then an approximated convex optimization problem is obtained by using the successive convex approximation (SCA). When the instantaneous channel state information (CSI) of the eavesdropping link is unknown to the legitimate transmitter, another interruption-constrained energy efficiency optimization problem is proposed and the Bernstein-type inequality (BTI) is used to conservatively approximate the probability constraint. The paper proposes a two-level iterative algorithm based on Dinkelbach to find the optimal solution of the EE maximization problem. Numerical results validate the effectiveness and convergence of the proposed algorithm.http://dx.doi.org/10.1155/2021/6378715 |
| spellingShingle | Liang Xue Yao Ma Miao Zhang Wanqiang Qin Jin-Long Wang Yazhou Wu Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT International Journal of Antennas and Propagation |
| title | Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT |
| title_full | Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT |
| title_fullStr | Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT |
| title_full_unstemmed | Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT |
| title_short | Energy Efficiency Maximization with Optimal Beamforming in Secure MISO CRNs with SWIPT |
| title_sort | energy efficiency maximization with optimal beamforming in secure miso crns with swipt |
| url | http://dx.doi.org/10.1155/2021/6378715 |
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