AI-Based Time-, Frequency-, and Space-Domain Channel Extrapolation for 6G: Opportunities and Challenges
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Vehicular Technology Magazine"
DOI: 10.1109/mvt.2023.3234169
Abstract: The trend of using larger scale antenna arrays will continue toward 6G systems, where the number of antennas will be further scaled up to improve spectral efficiency. However, the increase in the number of antennas… read more here.
Keywords: time frequency; frequency space; domain channel; extrapolation ... See more keywords
Sparse Bayesian Learning Based Channel Extrapolation for RIS Assisted MIMO-OFDM
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Communications"
DOI: 10.1109/tcomm.2022.3184640
Abstract: Reconfigurable intelligent surface (RIS) is a revolutionary technology and can be used to assist communication systems by adaptively manipulating the wireless environment. In this paper, we propose a novel cascaded channel estimation algorithm for the… read more here.
Keywords: channel extrapolation; ris assisted; sparse bayesian; ris ... See more keywords
Lightweight TCN-Based Spatial-Temporal Channel Extrapolation for RIS-Aided Communication
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2024.3381217
Abstract: Reconfigurable intelligent surface (RIS) has become a promising technology to enhance the coverage for the millimeter-wave communications. In this paper, we consider the acquisition of time-varying cascaded channels. Generally, this requires huge pilot overhead due… read more here.
Keywords: lightweight tcn; channel extrapolation; extrapolation; channel ... See more keywords
Multi-User Parallel Channel Extrapolation Based on Graph-Transformer
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2025.3576808
Abstract: Traditional channel estimation method in massive MIMO system requires high overhead to maintain the accuracy in multiuser environments. To handle this problem, we propose the Graph-Transformer Multi-User Channel Extrapolation (G-TMUC) method, which exploits the spatial… read more here.
Keywords: channel; multi user; channel extrapolation; graph transformer ... See more keywords
Multi-User Pilot Pattern Optimization for Channel Extrapolation in 5G NR Systems
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DOI: 10.1109/twc.2025.3552064
Abstract: Pilot pattern optimization in orthogonal frequency division multiplexing (OFDM) systems has been widely investigated due to its positive impact on channel estimation. In this paper, we consider the problem of multi-user pilot pattern optimization for… read more here.
Keywords: channel extrapolation; pilot pattern; multi user; pilot ... See more keywords
Near-field Spatial-domain Channel Extrapolation for XL-MIMO Systems
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Wireless Communications"
DOI: 10.1109/twc.2025.3610388
Abstract: Extremely large-scale multiple-input multiple-output (XL-MIMO) systems are pivotal to next-generation wireless communications, where dynamic RF chain architectures offer enhanced performance. However, efficient precoding in such systems requires accurate channel state information (CSI) obtained with low… read more here.
Keywords: near field; mimo systems; channel extrapolation; extrapolation ... See more keywords