Energy efficiency analysis and enhancement for secure transmission in SWIPT systems exploiting full duplex techniques

Energy-Constrained SWIPT Networks: Enhancing Physical Layer Security With FD Self-Jamming

“…By applying the binomial theorem [52] in (32), we derive Substituting (33) and (35) into (34), and with the aid of [53, Eq. (3.381.4)], we obtain…”

“…Other works have looked at the scenarios where additional external jammer is unavailable and the user within the network harvests energy and acts as jammer itself [33][34][35]. In [33], the secrecy performance of FD SWIPT networks with the PS protocol was studied.…”

“…In [33], the secrecy performance of FD SWIPT networks with the PS protocol was studied. A SWIPT transmission system with FD self-jamming was analyzed in [34] in the presence of a passive eavesdropper. In [35], the authors extended the research in the CR networks, where the energy collected by the receiving antenna is used for producing jamming signals.…”

“…In [35], the authors extended the research in the CR networks, where the energy collected by the receiving antenna is used for producing jamming signals. However, [33][34][35] only considered the single-antenna scenario, which would be not practical any longer when applied to the multi-antenna cases. Moreover, only [34] considered the performance optimization, which was only addressed by numerical simulations, and no exact demonstration for the existence of the optimum point was provided.…”

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

“…In [21], a simple communication protocol for secure communications with the help from a wireless powered jammer was proposed and the secrecy throughput was maximized. In [22], a two-phase protocol, where the destination node was assumed to harvest energy from the source node in the first phase and then use these energy to interfere with the EAVs in the second phase, was proposed and the secrecy energy efficiency was maximize by optimizing the time allocation and the power allocation. In [23], by considering both the minimum secrecy rate requirement and the minimum harvested energy requirement, the secrecy energy efficiency was maximized by optimizing power allocation and power splitting ratio.…”