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On the Performance Analysis of WPT-based Dual-Hop AF Relaying Networks in α-μ Fading

Nauryzbayev, G and Rabie, Khaled and Abdallah, M and Adebisi, Bamidele (2018) On the Performance Analysis of WPT-based Dual-Hop AF Relaying Networks in α-μ Fading. IEEE Access, 6. pp. 37138-37149. ISSN 2169-3536

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Abstract

In this paper, a two-hop amplify-and-forward relaying system, where an energy-constrained relay node entirely depends on the energy scavenged from the source signal, is investigated. This paper analyzes the performance of the energy-harvesting (EH) protocols, namely, ideal relaying receiver (IRR), power-splitting relaying (PSR) and time-switching relaying (TSR), over independent but not identically distributed (i.n.i.d.) α-μ fading channels in terms of the ergodic capacity and ergodic outage probability (OP). We derive exact unified and closed-form analytical expressions for the performance metrics with the aforementioned protocols over i.n.i.d. α-μ channels. Three fading scenarios, such as Weibull, Nakagami-m and Rayleigh channels, are investigated. Provided simulation and numerical results validate our analysis. It is demonstrated that the optimal EH time-switching and power-splitting factors of the corresponding TSR and PSR protocols are critical in achieving the best system performance. Finally, we analyzed the impact of the fading parameters α and μ on the achievable ergodic OP.

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