Analysis of SWIPT-Enabled Relay Networks with Full-Duplex Destination-Aided Jamming

Abstract

Simultaneous wireless information and power transfer (SWIPT) is a major breakthrough in the field of low-power wireless information transmissions. In this paper, the secrecy performance of the SWIPT-enabled relay network with full-duplex destination-aided jamming is assessed, where both the power-splitting (PS) and time-switching (TS) schemes at the relay are considered with the linear and nonlinear energy harvesting models. The relay harvests energy from the confidential signal and artificial noise sent by the source and destination, respectively, and forwards the amplified signal to the destination, in the presence of an eavesdropper. The analytical closed-form expressions of the connection outage probability (COP), secrecy outage probability (SOP), and transmission outage probability (TOP) for PS- and TS-based schemes are derived, and the closed-form expression of the lower bound of ergodic secrecy capacity (ESC) is calculated. The asymptotic-form expressions of the COP, SOP, TOP, and ESC are further analyzed to capture the valuable information in the high SNR regime. Numerical results verify the correctness of analytical results, reveal the effects of the PS/TS ratio, and transmit the signal-to-noise ratio on secrecy performance.

New Practical Nonlinear Energy-Harvesting Models for Wireless-Powered Communications

“…where T 2 is calculated by substituting P th into (66), and T 3 = 1 − F X ðP th Þ is calculated using (9). Moreover, we have…”

“…Linear, piece-wise linear, and nonlinear EH (NL-EH) models characterize the amount of harvested power [1,[4][5][6][7][8]. Most works in the literature consider the linear EH model which has a direct proportion between the input and output powers of the EH circuit [1,9,10]. On the other hand, the piece-wise linear EH model is considered in the literature [4,5] which provides the same amount of energy as in the linear model for the small amount of input power.…”