Abstract
Relaying transmission is a promising approach for enhancing the performance of wireless networks, meanwhile wireless power transfer is an emerging solution for prolonging the lifetime of energy constrained relay nodes. In this framework, the amplify-and-forward (AF) relay network consisting of a power transfer and information source, an energy constrained relay and a destination over dissimilar fading channels is taken into account. First, the relay employs the time switching-based relaying (TSR) protocol to harvest energy from the source. Accordingly, the relay supports the source transmits information to the destination. By utilizing the statistical characteristics of signal-to-noise ratio (SNR), the closed-form expressions of outage probability (OP) and average symbol error probability (ASEP) are derived. By means of the obtained result of OP, we also investigate throughput of the system for delay-limited transmission mode. Moreover, we accordingly evaluate the analysis in details and assess the performance of the considered system in various system parameters, such as energy harvesting time, energy harvesting efficiency, and relay location. Finally, Monte-Carlo simulation is also contributed to confirm the correctness of the analytical results. DOI: http://dx.doi.org/10.5755/j01.eee.21.5.13331
Highlights
Radio frequency (RF) energy harvesting (EH), a technique to collect wireless energy from the surrounding environment for prolonging the lifetime of a wireless network, has received significant attention recently from both academia and industry [1]–[5]
The analysis showed that the energy usage at an EH relay depends on the relay’s energy harvesting process, and on its transmit power setting and the other relays in the system
We focus on the performance of power transfer system consisting of a power and information source, an energy constrained relay and a destination that all of them are equipped with single antenna over dissimilar Rayleigh/Rician fading channels
Summary
Radio frequency (RF) energy harvesting (EH), a technique to collect wireless energy from the surrounding environment for prolonging the lifetime of a wireless network, has received significant attention recently from both academia and industry [1]–[5]. In the paper [13], the researchers investigated a wireless energy harvesting and information transfer protocol in cognitive relay networks over the quasi-static Rayleigh fading channels. Taking into account the work [14], an AF cooperative network is considered, where an energy constrained relay node harvests energy from the received RF signals and uses that harvested energy to forward the source signal to the destination node over Rayleigh fading channels. We focus on the performance of power transfer system consisting of a power and information source, an energy constrained relay and a destination that all of them are equipped with single antenna over dissimilar Rayleigh/Rician fading channels.
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