Author

Yi Song

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Preprint Sep 2026

Environment-Aware Diffusion Model for Massive MIMO-OFDM Channel Estimation

This paper proposes an environment-aware diffusion based channel estimation in massive multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. The high dimensionality of massive MIMO channels combined with limited pilot resources makes accurate estimation challenging. To address t...

Wan-Chen Hu, Jie Yang, Yi Song et al. · 0 citations

Preprint Sep 2026

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

Prior-aided masked vector quantization (PM-VQ), a learning-based separate source--channel coding (SSCC) feedback scheme conditioned on the average angle--delay power map---a compact representation of the channel second-order statistics available at both the UE and the BS, is proposed.

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

Preprint Aug 2026

Spectral-Efficient MIMO-OFDM: Low-Complexity Solution based on Random Multiplexing

Numerical results coincide with the analysis and demonstrate significant improvements in terms of achievable rates and bit error rate compared to conventional MIMO-OFDM counterpart, making the proposed scheme a promising solution to 6G and beyond wireless networks.

Jie Yang, Wan-Chen Hu, Yi Song et al. · 0 citations