Gridless and Fast 4-D ISAC Parameter Estimation for MU-MIMO-OFDM Based on FFOMP-OGR
With the rise of sixth-generation wireless systems, Integrated Sensing and Communication (ISAC) increasingly adopts MU-MIMO-OFDM for four-dimensional joint parameter estimation. However, existing approaches face two key challenges: the computational complexity of super-resolution grows rapidly with grid refinement, and...