Exploiting full Duplex techniques for secure communication in SWIPT system

Mou, Weifeng; Cai, Yueming; Yang, Weiwei; Xu, Xiaoming; Hu, Jianwei

doi:10.1109/wcsp.2015.7341300

Cited by 15 publications

(15 citation statements)

References 16 publications

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“…The physical-layer (PHY) security technique that uses the inherent randomness of wireless channels is an efficient approach to improving the secrecy of wireless networks [20] establishes a FSK based swipt system powered by DC power supply for full duplex communication through shared channel. In [21], the end point node working in the fullduplex (FD) pattern in a single-input-single-output (SISO) SWIPT system, to obtain the highest security throughput of the system by a cooperative majorization of time switching (TS) coefficient, as well as codeword transmission rate, was studied. As an extension of [21], the authors of [22] investigated secrecy rate maximization (SRM), beamforming and null-space beamforming for secure communications in AF relay systems.…”

Section: Related Workmentioning

confidence: 99%

“…In [21], the end point node working in the fullduplex (FD) pattern in a single-input-single-output (SISO) SWIPT system, to obtain the highest security throughput of the system by a cooperative majorization of time switching (TS) coefficient, as well as codeword transmission rate, was studied. As an extension of [21], the authors of [22] investigated secrecy rate maximization (SRM), beamforming and null-space beamforming for secure communications in AF relay systems. The authors of [23] a scheme by which the destination is able to assist cooperative jamming to maximize the confidentiality rate.…”

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

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

Chen

Xue-shan

et al. 2021

Energies

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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.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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

Chen

Xue-shan

et al. 2021

Energies

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“…As in [27], this depends on the rectification process and the energy harvesting circuit. Here, we do not consider the noise power, which is much smaller than the power of the energy signal [28]. As in [29,30], we assume that the system works in the original architecture used by the collector.…”

Section: Full-duplex Dual-antenna Energy Harvestingmentioning

confidence: 99%

Time and Power Allocation for Energy Efficiency Maximization in Wireless-Powered Full-Duplex Relay Systems

Song

Han

et al. 2019

Future Internet

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In this paper, we propose an optimal time and power allocation scheme in a wireless power supply full-duplex (FD) relay system, where we consider the number of relay antennas in the energy harvesting stage. At the same time, the energy efficiency optimization problem of the system is structured, where optimization issues related to time allocation factors and power allocation are established. For the FD dual-antenna and the FD single-antenna energy harvesting system, energy efficiency function is proven to be a concave function over the time-switch factor, and the optimal time-switching factor is theoretically obtained using the Lambert function. Then, according to the given value range of the optimal time switching factor, the optimal power distribution scheme is obtained by analyzing the derivative function of the system energy efficiency and using the properties of the Lambert function. The time-switching factor and transmission power are optimally selected at the wireless power supply FD relay. Results reveal that the performance of energy efficiency of the dual-antenna energy harvesting at the FD relay outperforms that of the single-antenna. Moreover, our results demonstrate that FD relay systems always substantially boost the energy efficiency compared with half-duplex (HD) relay systems.

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“…where η is the energy harvesting efficiency, 0 < η ≤ 1, which depends on the rectification process and the energy harvesting circuitry [15]. Here, the power of noise (including both the antenna noise and the rectifier noise) is not taken into consideration, since it is much smaller than that of energy signal [37]. The harvested energy at relay will be stored in a battery for information relaying in the next transmission block.…”

Section: A System Modelmentioning

confidence: 99%