Performance Analysis of a Cognitive Radio Network With an Energy Harvesting Secondary Transmitter Under Nakagami-m Fading

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In this paper, we consider an overlay cognitive radio network, in which a secondary transmitter (ST) is willing to relay the information of a primary transmitter toward a primary receiver. In return, ST can access the licensed band to send its own information superimposed with the primary signal to a secondary receiver. The power-limited ST uses a power splitting protocol to harvest energy from its received signal to increase its transmit power. We analyze the performance of the primary and the secondary systems under independent Nakagami-m fading by deriving their corresponding outage probabilities in integral-based expressions. In addition, by considering the high signal-to-noise ratio, we obtain very tight closed-form approximations of the outage probabilities. Thereafter, by further analyzing the approximations, we reveal novel insights on the diversity orders and coding gains of the two systems. Our analytical results are validated through extensive Monte-Carlo simulations.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2018-03
Language
English
Article Type
Article
Citation

IEEE ACCESS, v.6, pp.4135 - 4144

ISSN
2169-3536
DOI
10.1109/ACCESS.2018.2791581
URI
http://hdl.handle.net/10203/240926
Appears in Collection
GT-Journal Papers(저널논문)
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