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arXiv · 2012.10111

Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System

Jiakuo Zuo·Yuanwei Liu·Liang Yang·Lingyang Song·Ying-Chang Liang
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Abstract

A reconfigurable intelligent surface (RIS) enhanced non-orthogonal multiple access assisted backscatter communication (RIS-NOMABC) system is considered. A joint optimization problem over power reflection coefficients and phase shifts is formulated. To solve this non-convex problem, a low complexity algorithm is proposed by invoking the alternative optimization, successive convex approximation and manifold optimization algorithms. Numerical results corroborate that the proposed RIS-NOMABC system outperforms the conventional non-orthogonal multiple access assisted backscatter communication (NOMABC) system without RIS, and demonstrate the feasibility and effectiveness of the proposed algorithm.

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Jiakuo Zuo, Yuanwei Liu, Liang Yang, Lingyang Song, Ying-Chang Liang. 2020-12-18. Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System. https://arxiv.org/abs/2012.10111

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