Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System

Jiakuo Zuo; Yuanwei Liu; Liang Yang; Lingyang Song; Ying-Chang Liang

Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System

Information Theory 2020-12-21 v1 Signal Processing math.IT

Authors: Jiakuo Zuo , Yuanwei Liu , Liang Yang , Lingyang Song , Ying-Chang Liang

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.

Keywords

reconfigurable intelligent surface beamforming random access

Cite

@article{arxiv.2012.10111,
  title  = {Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System},
  author = {Jiakuo Zuo and Yuanwei Liu and Liang Yang and Lingyang Song and Ying-Chang Liang},
  journal= {arXiv preprint arXiv:2012.10111},
  year   = {2020}
}

Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System

Abstract

Keywords

Cite

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