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Author

Hong Ren

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Preprint Oct 2026

Model-Order-Adaptive Channel Estimation for AFDM Systems with Fractional Delay and Doppler

Affine frequency division multiplexing (AFDM) has emerged as a promising waveform for high-mobility communications owing to its ability to exploit multipath diversity. However, channel state information (CSI) acquisition remains challenging in channels with fractional delay and Doppler and an unknown number of propagat...

Rui-Zhe Wang, Cun-Hua Pan, Hong Ren et al. · 0 citations
Conference Aug 2026

BEV-Space Temporal Fusion for Multi-Modal Beam Prediction in Vehicular mmWave Systems

Sensing-assisted beam prediction in millimeter-wave (mmWave) vehicular systems requires effective fusion of complementary multi-modal observations across sequential timesteps. Existing methods fuse globally pooled one-dimensional features, discarding cross-modal geometric correspondence before temporal aggregation. Thi...

Jia-Ming Zeng, Cun-Hua Pan, Hao-Yang Weng et al. · 0 citations
Preprint Aug 2026

AFDM-ISAC With Fractional Delay-Doppler Coupling

Affine frequency division multiplexing (AFDM) is a promising chirp-based multicarrier waveform for high-mobility integrated sensing and communication (ISAC). Accurate angle, delay, and Doppler estimation is essential for AFDM sensing. Since target delays and Doppler shifts are generally continuous-valued, representing...

Shao-Hua Li, Cun-Hua Pan, Hong Ren et al. · 0 citations

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