Energy harvesting-assisted wireless transmission secured with jamming: Performance analysis

This paper ameliorates information security and energy efficiency for wireless communications, accounting for hardware imperfection and channel impairments (fading, shadowing, path-loss), by exploiting jamming and energy harvesting from multi-antenna power beacons, respectively. We also propose closed-form formulas of outage probability at desired user and intercept outage probability at eavesdropper to assess communication reliability and information security, respectively, under practical consideration of nonlinear energy harvesters. A plurality of results corroborate the proposed formulas and unveil that hardware imperfection, energy scavenging nonlinearity, and channel impairments significantly mitigate system performance. Additionally, target security/reliability performances are attained possibly-and-flexibly by adopting a multi- specification set. Notwithstanding, the reliability changes significantly with this set while the security is high and slightly varies with it, implying that one can expect high reliability performance subject to high security performance. Noticeably, the proposed transmission scheme achieves the best performance by properly selecting the time division coefficient. Furthermore, system performance is affected more seriously by energy scavenging nonlinearity than by hardware imperfection.