arxivcs.ITeess.SP2026-07-03
Diffusion-Based Noise-Adaptive Null-Space Channel Estimation for OFDM Systems
Heqiang Qi, Yirun Chen, Xiangming Meng, Chunxiao Jiang, Sheng Wu, Linling Kuang
Accurate channel estimation in orthogonal frequency division multiplexing (OFDM) systems remains challenging when demodulation reference signal (DMRS) observations are sparse and noisy, and when DMRS configurations vary across deployment scenarios. This paper proposes DANCE (Diff…