| dc.description.abstract | There has been tremendous increase in the number of devices connected to the internet
and the wireless communication network where wide sensor networks (WSNs) carry vital
information such as bank, medical, security and tactical surveillance records are essential
in our daily lives. The transmission of these messages over the network calls for infor-
mation security because of the randomness and distributed nature of such networks. To
guarantee message confidentiality, we considered a dual-hop cooperative wireless network
consisting of a base station (BS), intermediate nodes equipped with energy harvesting
(EH) circuitries, and a legitimate user, in the presence of a passive multiple eavesdroppers.
The intermediate nodes harvest energy from the BS by using the time switching-based
relaying (TSR) protocol and use this harvested energy to transmit information to the
legitimate user.
During the transmission of information, the BS typically faces a risk of losing information
due to malicious eavesdropping. Thus, to enhance the secrecy of the considered sys-
tem, one of the intermediate nodes acts as a jammer, using harvested energy to generate
interference with the eavesdroppers. Under these assumptions, we evaluate the system
performance using physical layer security (PLS) performance metrics for example Secrecy
outage probability (SOP), Secrecy throughput (ST) and Asymptotic secrecy outage prob-
ability (ASOP).
The key finding are that as the number of intermediate nodes are increased, the overall se-
crecy performance of the system improves, as the number of eavesdroppers NE increases,
the performance decreases, and finally as more radio frequency energy from the source
is converted for information transmission and processing, the network performance is
improved. | en_US |
