Abstract
Reconfigurable intelligent surface (RIS)-based transmission technology offers a promising solution to enhance wireless communication performance cost-effectively through properly adjusting the parameters of a large number of passive reflecting elements. This letter proposes a cosine similarity theorem-based low-complexity algorithm for adapting the phase shifts of an RIS that assists a multiple-input multiple-output (MIMO) transmission system. A semi-analytical probabilistic approach is developed to derive the theoretical average bit error probability (ABEP) of the system. Furthermore, the validity of the theoretical analysis is supported through extensive computer simulations.
| Original language | English |
|---|---|
| Article number | 9160972 |
| Pages (from-to) | 2946-2950 |
| Number of pages | 5 |
| Journal | IEEE Communications Letters |
| Volume | 24 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2020 |
Bibliographical note
Publisher Copyright:© 1997-2012 IEEE.
Funding
Manuscript received July 31, 2020; accepted August 3, 2020. Date of publication August 6, 2020; date of current version December 10, 2020. This work was supported by the Scientific and Technological Research Council of Turkey (TÜB˙TAK) under grant no 117E869. The associate editor coordinating the review of this letter and approving it for publication was Q. Wu. (Corresponding author: Ertugrul Basar.) Zehra Yigit and Ibrahim Altunbas are with the Department of Electronics and Communication Engineering, Istanbul Technical University, 34469 Istanbul, Turkey (e-mail: [email protected]; [email protected]).
| Funders | Funder number |
|---|---|
| Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | 117E869 |
Keywords
- Reconfigurable intelligent surfaces (RISs)
- cosine similarity theorem
- multiple-input multiple-output (MIMO)