scholarly journals Security Enhancement for Energy Harvesting Cognitive Networks with Relay Selection

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Khuong Ho-Van ◽  
Thiem Do-Dac
Keyword(s):  
Energy Harvesting ◽  
Relay Selection ◽  
Signal To Noise Ratio ◽  
Selection Method ◽  
Cognitive Networks ◽  
Secondary Users ◽  
Security Enhancement ◽  
Radio Frequency Energy ◽  
Secure Information ◽  
Harvesting Method

Relay selection is proposed in this paper as an efficient solution to secure information transmission of secondary users against eavesdroppers in energy harvesting cognitive networks. The proposed relay selection method selects a secondary relay among available secondary relays, which are capable of harvesting radio frequency energy in signals of the secondary transmitter and correctly restore secondary message, to curtail signal-to-noise ratio at the wire-tapper. In order to evaluate the security performance of the suggested relay selection method, an exact intercept outage probability formula accounting for peak transmit power confinement, Rayleigh fading, and interference power confinement is firstly derived. Monte-Carlo simulations are then generated to corroborate the proposed formula. Numerous results expose that positions of relays, the number of relays, and parameters of the energy harvesting method significantly influence the security performance while the power confinements on secondary transmitters cause the performance saturation.

scholarly journals Relay Selection-and-Jamming Scheme with Nonlinear Energy Harvesting

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Triet Pham-Minh ◽  
Khuong Ho-Van ◽  
Hoa Nguyen-Minh ◽  
Khanh Nghi-Vinh
Keyword(s):  
Energy Harvesting ◽  
Relay Selection ◽  
Intermediate Node ◽  
Energy Harvesters ◽  
Radio Frequency Energy ◽  
Asymptotic Expressions ◽  
Source Signals ◽  
Nonlinear Energy ◽  
Improve Reliability ◽  
Selection Of

When direct source-destination communications are in outage, relay selection is a preferable solution to improve reliability for this communications. However, such a relay selection makes the eavesdropper better overhear source data through both source-relay and relay-destination communication hops, losing data security. To improve both reliability and security, this paper proposes a relay selection-and-jamming (RaJ) scheme to select one intermediate node as a conventional relay and another node as a jammer. To enhance energy efficiency, all intermediate nodes harvest radio frequency energy in source signals for their operations with nonlinear energy harvesting (NL-EH). The security and reliability of the RaJ scheme are assessed through suggested rigorous/asymptotic expressions and are significantly better than two benchmark schemes without neither jamming nor both relay selection and jamming. Additionally, they can be optimized with reasonable selection of specifications. Moreover, the NL property of the energy harvesters dramatically affects the reliability but negligibly degrades the security for the RaJ scheme. Furthermore, the linear EH (L-EH) is more reliable but less secure than the NL-EH.

scholarly journals Buffer-Aided Successive Relay Selection Scheme for Energy Harvesting IoT Networks

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 36246-36258 ◽  
Author(s):  
Ghulam Shabbir ◽  
Jamil Ahmad ◽  
Waseem Raza ◽  
Yasar Amin ◽  
Adeel Akram ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Relay Selection ◽  
Selection Scheme

scholarly journals Enhanced Power Extraction with Sediment Microbial Fuel Cells by Anode Alternation

Fuels ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 168-178
Author(s):  
Marzia Quaglio ◽  
Daniyal Ahmed ◽  
Giulia Massaglia ◽  
Adriano Sacco ◽  
Valentina Margaria ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Harvesting ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Average Power ◽  
Power Extraction ◽  
Harvesting Technique ◽  
Harvesting Method ◽  
Energy Harvesting Devices ◽  
Efficient Power

Sediment microbial fuel cells (SMFCs) are energy harvesting devices where the anode is buried inside marine sediment, while the cathode stays in an aerobic environment on the surface of the water. To apply this SCMFC as a power source, it is crucial to have an efficient power management system, leading to development of an effective energy harvesting technique suitable for such biological devices. In this work, we demonstrate an effective method to improve power extraction with SMFCs based on anodes alternation. We have altered the setup of a traditional SMFC to include two anodes working with the same cathode. This setup is compared with a traditional setup (control) and a setup that undergoes intermittent energy harvesting, establishing the improvement of energy collection using the anodes alternation technique. Control SMFC produced an average power density of 6.3 mW/m2 and SMFC operating intermittently produced 8.1 mW/m2. On the other hand, SMFC operating using the anodes alternation technique produced an average power density of 23.5 mW/m2. These results indicate the utility of the proposed anodes alternation method over both the control and intermittent energy harvesting techniques. The Anode Alternation can also be viewed as an advancement of the intermittent energy harvesting method.

scholarly journals EH-IRSP: Energy Harvesting Based Intelligent Relay Selection Protocol

IEEE Access ◽  
2020 ◽  
pp. 1-1
Author(s):  
Adil Khan ◽  
Mukhtaj Khan ◽  
Sheeraz Ahmed ◽  
Nadeem Iqbal ◽  
Mohd Amiruddin Abd Rahman ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Relay Selection ◽  
Selection Protocol ◽  
Relay Selection Protocol
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