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Joint Effective Channel Estimation and Data Detection for RIS-Aided Massive MIMO Systems With Low-Resolution ADCs
- Source :
- IEEE Communications Letters; February 2023, Vol. 27 Issue: 2 p721-725, 5p
- Publication Year :
- 2023
-
Abstract
- This letter investigates the uplink data detection for reconfigurable intelligent surface (RIS)-assisted massive multiple-input multiple-output (MIMO) systems with low-resolution quantization at the base stations (BSs). By exploiting the statistical characteristics of the user-to-RIS and RIS-to-BS channels and the central limit theorem (CLT), we first demonstrate that the components in the effective channel are approximately Gaussian distributed under propagation in sub-6 GHz bands. Based on the bilinear generalized approximate message passing (BiG-AMP) algorithm, we then provide a quantization-aware approach to estimate the effective channel and recover transmit symbols. Finally, numerical results show that the revised BiG-AMP technique can improve the performance of channel estimation and data detection with affordable computational complexity.
Details
- Language :
- English
- ISSN :
- 10897798 and 15582558
- Volume :
- 27
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- IEEE Communications Letters
- Publication Type :
- Periodical
- Accession number :
- ejs62259216
- Full Text :
- https://doi.org/10.1109/LCOMM.2022.3232217