Title: Cooperative NOMA: device-to-device mode and outage performance analysis

Authors: Anh-Tu Le; Thi-Anh Hoang; Dinh-Thuan Do

Addresses: Faculty of Electronics Technology, Industrial University of Ho Chi Minh City, 700000, Vietnam ' Faculty of Electronics Technology, Industrial University of Ho Chi Minh City, 700000, Vietnam ' Wireless Communications Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam

Abstract: In this paper, a new approach as combination of relaying model and device-to-device (D2D) scheme to perform non-orthogonal multiple access (NOMA) in the fifth generation (5G). In such NOMA system, we deploy power domain to transfer multiple users' signals over same resource at the same time. As important result, two NOMA users communicate with each other as D2D pair and they exhibit different system performance due to different links and dissimilar allocated power levels. More specifically, expression of a closed-form is presented in term of the outage probability. In numerical result, exactness of the theoretical expressions can be confirmed by exploiting Monte Carlo simulations. Compared to many scenarios in such multiple access technique, the proposed NOMA scheme can offer improved spectral efficiency and user fairness by matching the obtained analytical and simulation results.

Keywords: D2D; device-to-device; NOMA; non-orthogonal multiple access; channel estimation; 5G; outage probability.

DOI: 10.1504/IJSNET.2020.106880

International Journal of Sensor Networks, 2020 Vol.33 No.1, pp.25 - 32

Received: 07 Feb 2019
Accepted: 09 Nov 2019
Published online: 24 Apr 2020 *

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