Analysis of Asymmetric Dual-Hop Energy Harvesting-Based Wireless Communication Systems in Mixed Fading Environments
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In this paper, the performance of a dual-hop energy harvesting-based fixed-gain amplify-and-forward (AF) relaying communication system, subject to fading impairments, is investigated. We consider a source node (S) communicating with a destination node (D) through a fixed distant relay (R), which harvests energy from its received signals and uses it to amplify and forward the received signals to D. Power-splitting (PS) and time-switching (TS) schemes are considered in the analysis for energy harvesting. The S-R and R-D hops are modeled by the Nakagami-m and α-μ fading models, respectively. Closed-form expressions for the statistical properties of the end-to-end signal-to-noise ratio (SNR) are derived, based on which novel closed-form expressions for the average symbol error rate (ASER) as well as average channel capacity (ACC) considering four adaptive transmission policies are derived. The derived expressions are validated through Monte-Carlo simulations.
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