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Author

Chen Sun

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2026

Rate-Distortion-Function-Inspired CSI Feedback for FDD Massive MIMO-OFDM Communications

In this paper, we investigate the downlink channel state information (CSI) feedback for frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) communications with orthogonal frequency division multiplexing (OFDM) modulation. By formulating CSI feedback as a lossy compression problem, we study...

Yu-Hao Zhang, D. Shi, Chen Sun et al. · 0 citations
2026

Learning to Place: Transformer-Based Movable Antenna Array Design for Region-Oriented Wireless Sensing

Movable antennas (MAs) boost sensing capabilities by exploiting the extra degrees of freedom (DoFs) through flexible positioning. The design of MA arrays is typically challenged by directional uncertainty, where the target’s precise angle is unknown. To address this, we propose a region-oriented design framework focusi...

Yang Xia, Chen Sun, Xi-Qi Gao · 0 citations
2026

Leveraging Channel Charting for Localization With Weakly Supervised Learning

Channel charting (CC) is a self-supervised learning technique which aims to construct a lower-dimensional representation of the channel measurements, while preserving the neighboring relationship of users. In this letter, we propose a machine learning approach for radio-based localization task with the aid of CC, which...

Tian-Xiang Xu, Li You, Jue Wang et al. · 0 citations

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