| Title | Beyond Intelligent Reflecting Surfaces: Reflective-Transmissive Metasurface Aided Communications for Full-Dimensional Coverage Extension |
| Authors | Zhang, Shuhang Zhang, Hongliang Di, Boya Tan, Yunhua Han, Zhu Song, Lingyang |
| Affiliation | Peking Univ, Dept Elect, Beijing 100871, Peoples R China Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA Imperial Coll London, Dept Comp, London SW7 2BU, England Univ Houston, Elect & Comp Engn Dept, Houston, TX 77004 USA Kyung Hee Univ, Dept Comp Sci & Engn, Seoul 02447, South Korea |
| Issue Date | Nov-2020 |
| Publisher | IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY |
| Abstract | In this paper, we study an intelligent omni-surface (IOS)-assisted downlink communication system, where the link quality of a mobile user (MU) can be improved with a proper IOS phase shift design. Unlike the intelligent reflecting surface (IRS) in most existing works that only forwards the signals in a reflective way, the IOS is capable to forward the received signals to the MU in either a reflective or a transmissive manner, thereby enhancing the wireless coverage. We formulate an IOS phase shift optimization problem to maximize the downlink spectral efficiency (SE) of the MU. The optimal phase shift of the IOS is analysed, and a branch-and-bound based algorithm is proposed to design the IOS phase shift in a finite set. Simulation results show that the IOS-assisted system can extend the coverage significantly when compared to the IRS-assisted system with only reflective signals. |
| URI | http://hdl.handle.net/20.500.11897/599505 |
| ISSN | 0018-9545 |
| DOI | 10.1109/TVT.2020.3024756 |
| Indexed | SCI(E) |
| Appears in Collections: | 信息科学技术学院 |
