| Title | Reconfigurable Intelligent Surface Enhanced NOMA Assisted Backscatter Communication System |
| Authors | Zuo, Jiakuo Liu, Yuanwei Yang, Liang Song, Lingyang Liang, Ying-Chang |
| Affiliation | Nanjing Univ Posts & Telecommun, Sch Internet Things, Nanjing 210003, Peoples R China Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Hunan, Peoples R China Peking Univ, Dept Elect, Beijing 100080, Peoples R China Univ Elect Sci & Technol China UESTC, Ctr Intelligent Networking & Commun CINC, Chengdu 611731, Peoples R China |
| Keywords | NONORTHOGONAL MULTIPLE-ACCESS POWER ALLOCATION NETWORKS |
| Issue Date | Jul-2021 |
| Publisher | IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY |
| Abstract | To enhance the backscatter-links with double fading effect in non-orthogonal multiple access assisted backscatter communication (NOMABC), a new reconfigurable intelligent surface (RIS) enhanced NOMABC (RIS-NOMABC) system is proposed. A joint optimization problem over power reflection coefficients at the backscatter devices (BDs) and phase shifts at the RIS 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 NOMABC system without RIS, and demonstrate the feasibility and effectiveness of the proposed algorithm. |
| URI | http://hdl.handle.net/20.500.11897/619202 |
| ISSN | 0018-9545 |
| DOI | 10.1109/TVT.2021.3087582 |
| Indexed | SCI(E) |
| Appears in Collections: | 信息科学技术学院 |
