N. T. Nguyen, Q. -D. Vu, K. Lee and M. Juntti, "Spectral Efficiency Optimization for Hybrid Relay-Reflecting Intelligent Surface," 2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021, pp. 1-6, doi: 10.1109/ICCWorkshops50388.2021.9473487
Spectral efficiency optimization for hybrid relay-reflecting intelligent surface
|Author:||Nguyen, Nhan Thanh1; Vu, Quang-Doanh2; Lee, Kyungchun2;|
1Centre for Wireless Communications, University of Oulu, P.O.Box 4500, FI-90014, Finland
2The Mobile Networks, Nokia, 90650 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022032124246
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2022-03-21
We propose a novel concept of hybrid relay-reflecting intelligent surface (HR-RIS), in which a single or few elements are deployed with power amplifiers (PAs) to serve as active relays, while the remaining elements only reflect the incident signals. The design and optimization of the HR-RIS is formulated in a spectral efficiency (SE) maximization problem, which is efficiently solved by the alternating optimization (AO) method. The simulation results show that a significant improvement in the SE can be attained by the proposed HR-RIS, even with a limited power budget, with respect to the conventional reconfigurable intelligent surface (RIS). In particular, the favorable design and deployment of the HR-RIS are analytically derived and numerically justified.
IEEE Conference on Computer Communications workshops
|Pages:||1 - 6|
2021 IEEE International Conference on Communications Workshops, ICC Workshops 2021
IEEE International Conference on Communications Workshops
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work has been supported in part by Academy of Finland under 6Genesis Flagship (grant 318927) and EERA Project (grant 332362).
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
332362 (Academy of Finland Funding decision)
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