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cs.IT2025
Precoding-free Hierarchical Rate-Splitting Multiple Access via Stacked Intelligent Metasurface
Hiroaki Hashida, Boya Di
Interference management is a central bottleneck in dense multi-antenna wireless networks. Therefore, in this study, we present a digital precoding-free hierarchical rate-splitting…
cs.IT2024
Directivity-Aware Degrees of Freedom Analysis for Extremely Large-Scale MIMO
Shaohua Yue, Liang Liu, Boya Di
Extremely large-scale multiple-input multiple-output (XL-MIMO) communications, enabled by numerous antenna elements integrated into large antenna surfaces, can provide increased ef…
cs.IT2024
Hybrid Near-Far Field Channel Estimation for Holographic MIMO Communications
Shaohua Yue, Shuhao Zeng, Liang Liu +2
Holographic MIMO communications, enabled by large-scale antenna arrays with quasi-continuous apertures, is a potential technology for spectrum efficiency improvement. However, the…