Robust Beamforming and Power Splitting for Secure CR Network with Practical Energy Harvesting

Lei NI; Xinyu DA; Hang HU; Miao ZHANG; Hehao NIU

doi:10.1587/transcom.2018EBP3277

Robust Beamforming and Power Splitting for Secure CR Network with Practical Energy Harvesting

Lei NI, Xinyu DA, Hang HU, Miao ZHANG, Hehao NIU

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This paper introduces an energy-efficient transmit design for multiple-input single-output (MISO) energy-harvesting cognitive radio (CR) networks in the presence of external eavesdroppers (Eves). Due to the inherent characteristics of CR network with simultaneous wireless information and power transfer (SWIPT), Eves may illegitimately access the primary user (PU) bands, and the confidential message is prone to be intercepted in wireless communications. Assuming the channel state information (CSI) of the Eves is not perfectly known at the transmitter, our approach to guaranteeing secrecy is to maximize the secrecy energy efficiency (SEE) by jointly designing the robust beamforming and the power splitting (PS) ratio, under the constraints of total transmit power, harvested energy at secondary receiver (SR) and quality of service (QoS) requirement. Specifically, a non-linear energy harvesting (EH) model is adopted for the SR, which can accurately characterize the property of practical RF-EH circuits. To solve the formulated non-convex problem, we first employ fractional programming theory and penalty function to recast it as an easy-to-handle parametric problem, and then deal with the non-convexity by applying S-Procedure and constrained concave convex procedure (CCCP), which enables us to exploit the difference of concave functions (DC) programming to seek the maximum worst-case SEE. Finally, numerical results are presented to verify the performance of the proposed scheme.

Publication: IEICE TRANSACTIONS on Communications Vol.E102-B No.8 pp.1547-1553

Publication Date: 2019/08/01

Publicized: 2019/01/25

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2018EBP3277

Type of Manuscript: PAPER

Category: Fundamental Theories for Communications

Authors

Lei NI
  Air Force Engineering University
Xinyu DA
  Air Force Engineering University
Hang HU
  Air Force Engineering University
Miao ZHANG
  University of York
Hehao NIU
  National University of Defense Technology

Keyword

cognitive radio network, secrecy energy efficiency, physical layer security, non-linear energy harvesting model

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Lei NI, Xinyu DA, Hang HU, Miao ZHANG, Hehao NIU, "Robust Beamforming and Power Splitting for Secure CR Network with Practical Energy Harvesting" in IEICE TRANSACTIONS on Communications, vol. E102-B, no. 8, pp. 1547-1553, August 2019, doi: 10.1587/transcom.2018EBP3277.
Abstract: This paper introduces an energy-efficient transmit design for multiple-input single-output (MISO) energy-harvesting cognitive radio (CR) networks in the presence of external eavesdroppers (Eves). Due to the inherent characteristics of CR network with simultaneous wireless information and power transfer (SWIPT), Eves may illegitimately access the primary user (PU) bands, and the confidential message is prone to be intercepted in wireless communications. Assuming the channel state information (CSI) of the Eves is not perfectly known at the transmitter, our approach to guaranteeing secrecy is to maximize the secrecy energy efficiency (SEE) by jointly designing the robust beamforming and the power splitting (PS) ratio, under the constraints of total transmit power, harvested energy at secondary receiver (SR) and quality of service (QoS) requirement. Specifically, a non-linear energy harvesting (EH) model is adopted for the SR, which can accurately characterize the property of practical RF-EH circuits. To solve the formulated non-convex problem, we first employ fractional programming theory and penalty function to recast it as an easy-to-handle parametric problem, and then deal with the non-convexity by applying S-Procedure and constrained concave convex procedure (CCCP), which enables us to exploit the difference of concave functions (DC) programming to seek the maximum worst-case SEE. Finally, numerical results are presented to verify the performance of the proposed scheme.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018EBP3277/_p

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@ARTICLE{e102-b_8_1547,
author={Lei NI, Xinyu DA, Hang HU, Miao ZHANG, Hehao NIU, },
journal={IEICE TRANSACTIONS on Communications},
title={Robust Beamforming and Power Splitting for Secure CR Network with Practical Energy Harvesting},
year={2019},
volume={E102-B},
number={8},
pages={1547-1553},
abstract={This paper introduces an energy-efficient transmit design for multiple-input single-output (MISO) energy-harvesting cognitive radio (CR) networks in the presence of external eavesdroppers (Eves). Due to the inherent characteristics of CR network with simultaneous wireless information and power transfer (SWIPT), Eves may illegitimately access the primary user (PU) bands, and the confidential message is prone to be intercepted in wireless communications. Assuming the channel state information (CSI) of the Eves is not perfectly known at the transmitter, our approach to guaranteeing secrecy is to maximize the secrecy energy efficiency (SEE) by jointly designing the robust beamforming and the power splitting (PS) ratio, under the constraints of total transmit power, harvested energy at secondary receiver (SR) and quality of service (QoS) requirement. Specifically, a non-linear energy harvesting (EH) model is adopted for the SR, which can accurately characterize the property of practical RF-EH circuits. To solve the formulated non-convex problem, we first employ fractional programming theory and penalty function to recast it as an easy-to-handle parametric problem, and then deal with the non-convexity by applying S-Procedure and constrained concave convex procedure (CCCP), which enables us to exploit the difference of concave functions (DC) programming to seek the maximum worst-case SEE. Finally, numerical results are presented to verify the performance of the proposed scheme.},
keywords={},
doi={10.1587/transcom.2018EBP3277},
ISSN={1745-1345},
month={August},}

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TY - JOUR
TI - Robust Beamforming and Power Splitting for Secure CR Network with Practical Energy Harvesting
T2 - IEICE TRANSACTIONS on Communications
SP - 1547
EP - 1553
AU - Lei NI
AU - Xinyu DA
AU - Hang HU
AU - Miao ZHANG
AU - Hehao NIU
PY - 2019
DO - 10.1587/transcom.2018EBP3277
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2019
AB - This paper introduces an energy-efficient transmit design for multiple-input single-output (MISO) energy-harvesting cognitive radio (CR) networks in the presence of external eavesdroppers (Eves). Due to the inherent characteristics of CR network with simultaneous wireless information and power transfer (SWIPT), Eves may illegitimately access the primary user (PU) bands, and the confidential message is prone to be intercepted in wireless communications. Assuming the channel state information (CSI) of the Eves is not perfectly known at the transmitter, our approach to guaranteeing secrecy is to maximize the secrecy energy efficiency (SEE) by jointly designing the robust beamforming and the power splitting (PS) ratio, under the constraints of total transmit power, harvested energy at secondary receiver (SR) and quality of service (QoS) requirement. Specifically, a non-linear energy harvesting (EH) model is adopted for the SR, which can accurately characterize the property of practical RF-EH circuits. To solve the formulated non-convex problem, we first employ fractional programming theory and penalty function to recast it as an easy-to-handle parametric problem, and then deal with the non-convexity by applying S-Procedure and constrained concave convex procedure (CCCP), which enables us to exploit the difference of concave functions (DC) programming to seek the maximum worst-case SEE. Finally, numerical results are presented to verify the performance of the proposed scheme.
ER -