Common-Rate Constrained Cramér–Rao Bound Minimization for Multicast MIMO ISAC
We study Cramér–Rao bound (CRB) minimization under common-rate and power constraints for the multicast MIMO downlink. Under a covariance-matched nonparametric extended-target model, the trace CRB equals <inline-formula><tex-math notation="LaTeX">$c\,\text{tr}(\mathbf {S}^{-1})$</tex-math></inline-formula> and is attain...