Artificial Noise Aided Secrecy Information and Power Transfer in OFDMA Systems

Zhang, Meng; Liu, Yuan; Zhang, Rui

doi:10.1109/twc.2016.2516528

Cited by 103 publications

(76 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [38], the transmission modes referred to as no communication, direct communication, and relay communication are determined adaptively by subcarrier allocation while the optimal source and relay power allocation policy over all subcarriers is addressed to maximize the sum secrecy rate under a total power constraint. Jamming and ANaided resource allocation for sum secrecy rate maximization is, respectively, studied in [49] and [183], where the former focuses on the OFDMA-based two-way relay wireless sensor networks while the latter focuses on the OFDMA systems with joint secrecy information and power transfer. For considering the fairness of resource allocation in secure multiuser OFDMA downlink works, the work presented in [50] aims to assign subchannels and allocate power to optimize the max-min fairness criterion over the users' secrecy rate.…”

Section: A Secure Resource Allocationmentioning

confidence: 99%

A Survey of Optimization Approaches for Wireless Physical Layer Security

Wang

Bai

Zhao

et al. 2019

IEEE Commun. Surv. Tutorials

179

102

View full text Add to dashboard Cite

Due to the malicious attacks in wireless networks, physical layer security has attracted increasing concerns from both academia and industry. The research on physical layer security mainly focuses either on the secrecy capacity/achievable secrecy rate/capacity-equivocation region from the perspective of information theory, or on the security designs from the viewpoints of optimization and signal processing. Because of its importance in security designs, the latter research direction is surveyed in a comprehensive way in this paper. The survey begins with typical wiretap channel models to cover common scenarios and systems. The topics on physical-layer security designs are then summarized from resource allocation, beamforming/precoding, and antenna/node selection and cooperation. Based on the aforementioned schemes, the performance metrics and fundamental optimization problems are discussed, which are generally adopted in security designs. Thereafter, the state of the art of optimization approaches on each research topic of physical layer security is reviewed from four categories of optimization problems, such as secrecy rate maximization, secrecy outrage probability minimization, power consumption minimization, and secure energy efficiency maximization. Furthermore, the impacts of channel state information on optimization and design are discussed. Finally, the survey concludes with the observations on potential future directions and open challenges.

show abstract

Section: A Secure Resource Allocationmentioning

confidence: 99%

A Survey of Optimization Approaches for Wireless Physical Layer Security

Wang

Bai

Zhao

et al. 2019

IEEE Commun. Surv. Tutorials

179

102

View full text Add to dashboard Cite

show abstract

“…We also assume that the artificial noise sent from the SUs can be canceled at the PU and the CHAP but cannot be canceled at the EAVs. Such assumption can be practically realized by the method proposed in [44]: the SUs, the CHAP and the PU pre-store a set of Gaussian distributed random sequences used for artificial noise with the indices of the sequences treated as the keys. The SU randomly select a sequence and send its key secretly to the CHAP and the PU using the phase-shift modulation-based method proposed in [45].…”

Section: System Modelmentioning

confidence: 99%

Resource Allocation for Secure Communications in Cooperative Cognitive Wireless Powered Communication Networks

2019

IEEE Systems Journal

View full text Add to dashboard Cite

We consider a cognitive wireless powered communication network (CWPCN) sharing the spectrum with a primary network who faces security threats from eavesdroppers (EAVs). We propose a new cooperative protocol for the wireless powered secondary users (SU) to cooperate with the primary user (PU). In the protocol, the SUs first harvest energy from the power signals transmitted by the cognitive hybrid access point during the wireless power transfer (WPT) phase, and then use the harvested energy to interfere with the EAVs and gain transmission opportunities at the same time during the wireless information transfer (WIT) phase. Taking the maximization of the SU ergodic rate as the design objective, resource allocation algorithms based on the dual optimization method and the block coordinate descent method are proposed for the cases of perfect channel state information (CSI) and collusive/noncollusive EAVs under the PU secrecy constraint. More PU favorable greedy algorithms aimed at minimizing the PU secrecy outage probability are also proposed. We furthermore consider the unknown EAVs' CSI case and propose an efficient algorithm to improve the PU security performance. Extensive simulations show that our proposed protocol and corresponding resource allocation algorithms can not only let the SU gain transmission opportunities but also improve the PU security performance even with unknown EAVs' CSI.

show abstract

“…where I(; |) denotes the conditional mutual information. In (17), lower-case letters x 2 , v, g, and f represent realizations of the random variables X 2 , V , G, and F , respectively, and their support sets are denoted by X 2 , V, G, and F, respectively. Constraint C1 in (17) constrains the average transmit power of the ET to P ET , and C2 is due to (16), i.e., due to the fact that EHU has to have harvested enough energy for both processing and transmission of symbol X 1 .…”

Section: Subject Tomentioning

confidence: 99%

On the Secrecy Capacity of a Full-Duplex Wirelessly Powered Communication System

Nikoloska

Zlatanov

Hadzi-Velkov

et al. 2019

IEEE Trans. Wireless Commun.

Self Cite

View full text Add to dashboard Cite

In this paper, we investigate the secrecy capacity of a point-to-point, full-duplex (FD) wirelesly powered communication system in the presence of a passive eavesdropper (EVE). The considered system is comprised of an energy transmitter (ET), an energy harvesting user (EHU), and a passive EVE. The ET transmits radiofrequency energy, which is used for powering the EHU as well as for generating interference at the EVE.The EHU uses the energy harvested from the ET to transmit confidential messages back to the ET. As a consequence of the FD mode of operation, both the EHU and the ET are subjected to self-interference, which has different effects at the two nodes. In particular, the self-interference impairs the decoding of the received message at the ET, whilst it serves as an additional energy source at the EHU. For this system model, we derive an upper and a lower bound on the secrecy capacity. For the lower bound, we propose a simple achievability scheme. Our numerical results show significant improvements in terms of achievable secrecy rate when the proposed communication scheme is employed against its half-duplex counterpart, even for practical self-interference values at the ET.

show abstract

Artificial Noise Aided Secrecy Information and Power Transfer in OFDMA Systems

Cited by 103 publications

References 33 publications

A Survey of Optimization Approaches for Wireless Physical Layer Security

A Survey of Optimization Approaches for Wireless Physical Layer Security

Resource Allocation for Secure Communications in Cooperative Cognitive Wireless Powered Communication Networks

On the Secrecy Capacity of a Full-Duplex Wirelessly Powered Communication System

Contact Info

Product

Resources

About