Channel Estimation for a RIS-Assisted MU-MIMO System Using One-Bit ADCs over Spatially Correlated Channels

Fang, Wenhao; Xiao, Liang; Bao, Xiuwen; Wang, Jiaheng; Zhao, Chunming

doi:10.1109/iccc55456.2022.9880753

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…Although we adopted the model in[12] to represent the spatial correlation among the RIS elements, the proposed technique also works for other spatial correlation models that properly describe the relationship among the RIS elements such as the Kronecker model in[14]-[16].…”

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confidence: 99%

Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements

Lee,

et al. 2023

Preprint

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In this paper, a channel estimation technique for reconfigurable intelligent surface (RIS)-aided multi-user multipleinput single-output communication systems is proposed. By deploying a small number of active elements at the RIS, the RIS can receive and process the training signals. Through the partial channel state information (CSI) obtained from the active elements, the overall training overhead to estimate the entire channel can be dramatically reduced. To minimize the estimation complexity, the proposed technique is based on the linear combination of partial CSI, which only requires linear matrix operations. By exploiting the spatial correlation among the RIS elements, proper weights for the linear combination and normalization factors are developed. Numerical results show that the proposed technique outperforms other schemes using the active elements at the RIS in terms of the normalized mean squared error when the number of active elements is small, which is necessary to maintain the low cost and power consumption of RIS.

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confidence: 99%

Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements

Lee,

et al. 2023

Preprint

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show abstract

Channel Estimation for Reconfigurable Intelligent Surface With a Few Active Elements

Lee

et al. 2023

IEEE Trans. Veh. Technol.

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Channel Estimation for a RIS-Assisted MU-MIMO System Using One-Bit ADCs over Spatially Correlated Channels

Cited by 2 publications

References 24 publications

Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements

Channel Estimation for Reconfigurable Intelligent Surface with a few Active Elements

Channel Estimation for Reconfigurable Intelligent Surface With a Few Active Elements

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