Zhi, Kangda, Pan, Cunhua, Ren, Hong and Wang, Kezhi (2021) Statistical CSI-Based Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems With Direct Links. IEEE Wireless Communications Letters, 10 (5). pp. 1128-1132. ISSN 2162-2337
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2012.07030.pdf - Accepted Version Download (1MB) | Preview |
Abstract
This letter investigates the performance of reconfigurable intelligent surface (RIS)-aided massive multiple-input multiple-output (mMIMO) systems with direct links, and the phase shifts of the RIS are designed based on the statistical channel state information (CSI). We first derive the closed-form expression of the uplink ergodic data rate. Then, based on the derived expression, we use the genetic algorithm (GA) to solve the sum data rate maximization problem. With low-complexity maximal-ratio combination (MRC) and low-overhead statistical CSI-based scheme, we validate that the RIS can bring significant performance gains to the traditional mMIMO systems.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Intelligent reflecting surface (IRS), massive MIMO, reconfigurable intelligent surface (RIS), statistical CSI |
| Subjects: | G400 Computer Science G500 Information Systems |
| Department: | Faculties > Engineering and Environment > Computer and Information Sciences |
| Depositing User: | Rachel Branson |
| Date Deposited: | 03 Jun 2021 11:01 |
| Last Modified: | 31 Jul 2021 11:16 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/46337 |
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