Author

Song-Yan Xue

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Preprint Sep 2026

Prior-Aided Masked Vector Quantization CSI Feedback for FDD Massive MIMO Systems

Downlink channel state information (CSI) feedback is a key bottleneck in frequency-division duplex (FDD) massive MIMO systems, as the user equipment (UE) must convey its estimated channel to the base station (BS) over a limited uplink (UL) budget. To improve CSI reconstruction accuracy under tight feedback constraints,...

Yi Song, Tian-Yu Yang, Kang-Da Zhi et al. · 0 citations

Preprint Sep 2026

Low-Complexity Near-Field Channel Estimation and Subcarrier-Cooperative Hybrid Precoding for Wideband XL-MIMO OFDM Systems

This paper addresses both accurate near-field channel acquisition and scalable precoding for wideband extremely large aperture MIMO (XL-MIMO) OFDM systems, with particular focus on reducing complexity. In the considered system, each MIMO multipath component is characterized by five continuous angle-distance-delay param...

Kang-Da Zhi, Tian-Yu Yang, Song-Yan Xue et al. · 0 citations