Abstract
Information security and self-sustainability are crucial to resource-limited wireless networks. In this paper, we assess the secrecy performance of the legitimate link without having eavesdropper's channel state information (CSI) while considering an energy harvesting (EH) jammer with finite and infinite energy buffer sizes. The EH jammer utilizes accumulated energy from its buffer and transmits artificial noise (AN) to ensure secure communication. To manage the uncertainty in harvested energy and consumption, we analyze on-off (OO) jamming and always-on (AO) jamming schemes. The analytical expressions are obtained for secrecy outage probability (SOP). This analysis models the energy arrival and departure process by a discrete-time continuous-state Markov chain to eliminate the computational complexity and inaccuracy of a discrete-state Markov chain. Both the schemes are compared using SOP and secure throughput. This analysis shows the adequacy of a finite buffer for an EH jammer and also the fact that the availability of jamming power has a more pronounced effect on SOP as compared to a larger number of antennas at the jammer.
Highlights
T HE EXTENSIVE use of wireless technologies for industrial and domestic applications is developing into networks of heterogeneous devices
In this paper, the secrecy performance of a wireless network in the presence of an energy buffer-aided energy harvesting (EH) jammer is analyzed for OO and AO jamming
The analytical expressions are obtained for the OO and AO jamming in the case of the finite and infinite size buffer
Summary
T HE EXTENSIVE use of wireless technologies for industrial and domestic applications is developing into networks of heterogeneous devices. As the amount of energy is a continuous variable, the required value of L becomes large to achieve accuracy It becomes highly inefficient for low resource nodes as the number of levels increases to use the discrete-state Markov model for adaptive changes. Prior work on EH considered a discrete-state space model, authors in [19] and [20] have derived limiting distributions for energy dynamics considering a discrete-time continuous-state Markov model to analyze the communication outage performance in cases of finite and infinite size energy buffer. 4) Our analysis shows that in an energy-constrained system, the availability of jamming power has a more pronounced effect on the SOP as compared to a larger number of antennas at the jammer This analysis shows the existence of an optimal secrecy rate to maximize secure throughput.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
