Paper Info
Title
MSE-Based Transceiver Designs for RIS-Aided Communications With Hardware Impairments
Abstract
It is challenging to precisely configure the phase shifts of the reflecting elements at the reconfigurable intelligent surface (RIS) due to inherent hardware impairments (HIs). In this letter, the mean square error (MSE) performance is investigated in an RIS-aided single-user multiple-input multiple-output (MIMO) communication system with transceiver HIs and RIS phase noise. We aim to jointly optimize the transmit precoder, linear received equalizer, and RIS reflecting matrices to minimize the MSE. To tackle this problem, an iterative algorithm is proposed, wherein the beamforming matrices are alternately optimized. Specifically, for the beamforming optimization subproblem, we derive the closed-form expression of the optimal precoder and equalizer matrices. Then, for the phase shift optimization subproblem, an efficient algorithm based on the majorization-minimization (MM) method is proposed. Simulation results show that the proposed MSE-based RIS-aided transceiver scheme dramatically outperforms the conventional system algorithms that do not consider HIs at both the transceiver and the RIS.
Year
DOI
Venue
2022
10.1109/LCOMM.2022.3179614
IEEE Communications Letters
Keywords
DocType
Volume
Reconfigurable intelligent surface (RIS),hardware impairments (HIs),mean square error (MSE),majorization-minimization (MM)
Journal
26
Issue
ISSN
Citations 
8
1089-7798
0
PageRank 
References 
Authors
0.34
11
6
Name
Order
Citations
PageRank
Jingwen Zhao180.75
Ming Chen258185.60
Cunhua Pan3105977.17
Zhiyang Li400.34
Gui Zhou552.77
Xi Chen633370.76