Energy Efficient Resource Allocation for Downlink Cooperative Non-Orthogonal Multiple Access Systems

Zi-fu FAN; Qu CHENG; Zheng-qiang WANG; Xian-hui MENG; Xiao-yu WAN

doi:10.1587/transfun.E101.A.1603

Regular Section

Energy Efficient Resource Allocation for Downlink Cooperative Non-Orthogonal Multiple Access Systems

Zi-fu FAN, Qu CHENG, Zheng-qiang WANG, Xian-hui MENG, Xiao-yu WAN

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Keywords: cooperative non-orthogonal multiple access, resource allocation, fractional programming, energy efficiency

JOURNAL RESTRICTED ACCESS

2018 Volume E101.A Issue 9 Pages 1603-1607

DOI https://doi.org/10.1587/transfun.E101.A.1603

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Abstract

In this letter, we study the resource allocation for the downlink cooperative non-orthogonal multiple access (NOMA) systems based on the amplifying-and-forward protocol relay transmission. A joint power allocation and amplification gain selection scheme are proposed. Fractional programming and the iterative algorithm based on the Lagrangian multiplier are used to allocate the transmit power to maximize the energy efficiency (EE) of the systems. Simulation results show that the proposed scheme can achieve higher energy efficiency compared with the minimum power transmission (MPT-NOMA) scheme and the conventional OMA scheme.

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