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HARDWARE AND INTERFERENCE LIMITED COOPERATIVE CR-NOMA NETWORKS UNDER IMPERFECT SIC AND CSI

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dc.contributor.author Arzykulov, Sultangali
dc.contributor.author Nauryzbayev, Galymzhan
dc.contributor.author Celik, Abdulkadir
dc.contributor.author Eltawil, Ahmed M.
dc.date.accessioned 2022-07-08T09:28:28Z
dc.date.available 2022-07-08T09:28:28Z
dc.date.issued 2021
dc.identifier.citation Arzykulov, S., Nauryzbayev, G., Celik, A., & Eltawil, A. M. (2021). Hardware and Interference Limited Cooperative CR-NOMA Networks Under Imperfect SIC and CSI. IEEE Open Journal of the Communications Society, 2, 1473–1485. https://doi.org/10.1109/ojcoms.2021.3091606 en_US
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/6386
dc.description.abstract The conflation of cognitive radio (CR) and non-orthogonal multiple access (NOMA) concepts is a promising approach to fulfill the massive connectivity goals of future networks given the spectrum scarcity. Accordingly, this paper investigates the performance of a cooperative CR-NOMA network in the presence of system impairments and interference. Our analysis is involved with the derivation of the end-to-end outage probability for primary and secondary networks by accounting for channel state information (CSI), hardware imperfections, and residual interference caused by successive interference cancellation errors as well as coexisting primary/secondary users. Moreover, a mathematically tractable upper bound on spectral efficiency (SE) with its high-SNR approximations are derived. Besides, we propose an optimal power allocation scheme for CR-NOMA users to guarantee their outage and SE fairness. The numerical results validated by Monte Carlo simulations show that the CR-NOMA network provides a superior outage performance over orthogonal multiple access. Furthermore, the higher level of system imperfections leads to the performance degradation of the CR-NOMA networks. As imperfections become more severe, the CR-NOMA is observed to deliver relatively inferior outage and SE performance as compared to the perfect system scenario en_US
dc.language.iso en en_US
dc.publisher Open Journal of the Communications Society en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Type of access: Open Access en_US
dc.subject Cognitive radio en_US
dc.subject cooperative non-orthogonal multiple access en_US
dc.subject outage probability (OP) en_US
dc.subject spectral efficiency en_US
dc.subject hardware impairment en_US
dc.title HARDWARE AND INTERFERENCE LIMITED COOPERATIVE CR-NOMA NETWORKS UNDER IMPERFECT SIC AND CSI en_US
dc.type Article en_US
workflow.import.source science


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