Outage Performance of Generalized Cooperative NOMA Systems with SWIPT in Nakagami-m Fading

Nouha Dahi, Noureddine Hamdi


This paper investigates cooperative non-orthogonal multiple access (NOMA) with simultaneous wireless informationand power transfer (SWIPT) radio networks. A decode-andforward relay deserves a base station to transmit informationto two users. Two access schemes are addressed: direct andrelay assisted transmission (DRAT) where a line-of-sight existsbetween the source and destination, and non-direct and relayassisted transmission (nDRAT) where the only access to the finalusers is through the relay. New closed-form expressions of outageprobability are derived at these schemes. A generalization usingNakagami-m fading channels in considered, in order to present acomplete cover of relayed NOMA systems with energy harvestingbehavior in small scale fading.We consider the impact of time splitting fraction, power allocation and channel parameters on system maintainability andevaluate its maximum data rate transmission with full autonomy.By comparing the two schemes, cooperative NOMA with energyharvesting (EH) in nDRAT scenario outperforms transmissionwith direct link in terms of outage probability and transmissiondata rate.


Nakagami-m fading;simultaneous wireless information and power transfer; decode-and-forward; non-orthogonal multiple access; energy harvesting; outage probability

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DOI: http://dx.doi.org/10.24138/jcomss.v14i4.632

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