Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces
This letter focuses on the design of multiuser uplink multiple-input multiple-output (MIMO) communications assisted by multiple reconfigurable intelligent surfaces (RISs), where we consider both linear minimal mean-squared error (MMSE) and nonlinear MMSE-decision feedback equalization (DFE) receiver...
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| Format: | Journal Article |
| Language: | English |
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/88928 |
| _version_ | 1848765116104835072 |
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| author | Lv, Y. He, Z. Rong, Yue |
| author_facet | Lv, Y. He, Z. Rong, Yue |
| author_sort | Lv, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This letter focuses on the design of multiuser uplink multiple-input multiple-output (MIMO) communications assisted by multiple reconfigurable intelligent surfaces (RISs), where we consider both linear minimal mean-squared error (MMSE) and nonlinear MMSE-decision feedback equalization (DFE) receivers. The RISs, consisting of massive low-cost passive elements, can reflect the incident signals with either continuous or discrete phase shifts. Adopting the sum mean-squared error (MSE) minimization criterion, we jointly optimize the RIS phase shifts, the linear or nonlinear receiving matrices, and the source precoding matrices in iterative manner. Simulation results show that, when the signals in direct user-access point (AP) links suffer severe attenuation, the introduction of indirect user-RIS-AP links can significantly improve the system performance. |
| first_indexed | 2025-11-14T11:30:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-88928 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:30:08Z |
| publishDate | 2021 |
| publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-889282022-07-27T08:19:21Z Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces Lv, Y. He, Z. Rong, Yue Science & Technology Technology Telecommunications MIMO communication Uplink Transmission line matrix methods Receivers Precoding Decision feedback equalizers Array signal processing Reconfigurable intelligent surfaces MIMO communications multiuser MMSE DFE semidefinite relaxation REFLECTING SURFACE WIRELESS NETWORK OPTIMIZATION DESIGN This letter focuses on the design of multiuser uplink multiple-input multiple-output (MIMO) communications assisted by multiple reconfigurable intelligent surfaces (RISs), where we consider both linear minimal mean-squared error (MMSE) and nonlinear MMSE-decision feedback equalization (DFE) receivers. The RISs, consisting of massive low-cost passive elements, can reflect the incident signals with either continuous or discrete phase shifts. Adopting the sum mean-squared error (MSE) minimization criterion, we jointly optimize the RIS phase shifts, the linear or nonlinear receiving matrices, and the source precoding matrices in iterative manner. Simulation results show that, when the signals in direct user-access point (AP) links suffer severe attenuation, the introduction of indirect user-RIS-AP links can significantly improve the system performance. 2021 Journal Article http://hdl.handle.net/20.500.11937/88928 10.1109/LCOMM.2021.3117568 English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC fulltext |
| spellingShingle | Science & Technology Technology Telecommunications MIMO communication Uplink Transmission line matrix methods Receivers Precoding Decision feedback equalizers Array signal processing Reconfigurable intelligent surfaces MIMO communications multiuser MMSE DFE semidefinite relaxation REFLECTING SURFACE WIRELESS NETWORK OPTIMIZATION DESIGN Lv, Y. He, Z. Rong, Yue Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title | Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title_full | Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title_fullStr | Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title_full_unstemmed | Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title_short | Multiuser Uplink MIMO Communications Assisted by Multiple Reconfigurable Intelligent Surfaces |
| title_sort | multiuser uplink mimo communications assisted by multiple reconfigurable intelligent surfaces |
| topic | Science & Technology Technology Telecommunications MIMO communication Uplink Transmission line matrix methods Receivers Precoding Decision feedback equalizers Array signal processing Reconfigurable intelligent surfaces MIMO communications multiuser MMSE DFE semidefinite relaxation REFLECTING SURFACE WIRELESS NETWORK OPTIMIZATION DESIGN |
| url | http://hdl.handle.net/20.500.11937/88928 |