Non-Identical Diffusion Models in MIMO-OFDM Channel Generation
Researchers have developed a novel diffusion model, called the non-identical diffusion model, designed to improve the generation of wireless channel data. This new model uses an element-wise time indicator instead of a scalar time index to better capture local error variations. The approach is particularly effective for recovering MIMO-OFDM channel matrices where initial estimates have uneven reliability across different elements. AI