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Get Free AccessReconfigurable intelligent surfaces (RISs) have the potential of realizing the emerging concept of smart radio environments by leveraging the unique properties of metamaterials and large arrays of inexpensive antennas. In this article, we discuss the potential applications of RISs in wireless networks that operate at high-frequency bands, e.g., millimeter wave (30-100 GHz) and sub-millimeter wave (greater than 100 GHz) frequencies. When used in wireless networks, RISs may operate in a manner similar to relays. The present paper, therefore, elaborates on the key differences and similarities between RISs that are configured to operate as anomalous reflectors and relays. In particular, we illustrate numerical results that highlight the spectral efficiency gains of RISs when their size is sufficiently large as compared with the wavelength of the radio waves. In addition, we discuss key open issues that need to be addressed for unlocking the potential benefits of RISs for application to wireless communications and networks.
Marco Di Renzo, Konstantinos Ntontin, Jian Song, Fadil Habibi Danufane, Xuewen Qian, F. Lazarakis, Julien de Rosny, Dinh-Thuy Phan-Huy, Osvaldo Simeone, Rui Zhang, Mérouane Debbah, Geoffroy Lerosey, Mathias Fink, Sergei Tretyakov, Shlomo Shamai (2020). Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison. IEEE Open Journal of the Communications Society, 1, pp. 798-807, DOI: 10.1109/ojcoms.2020.3002955.
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Type
Article
Year
2020
Authors
15
Datasets
0
Total Files
0
Language
English
Journal
IEEE Open Journal of the Communications Society
DOI
10.1109/ojcoms.2020.3002955
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