... channels, Ph.D. dissertation, Technical University ofCatalonia, Barcelona, Spain, May 2003.[27 ]A. Pascual-Iserte,D.P.Palomar ,A. I.P´erez-Neira, andM.´ A. Lagunas, A robust maximin approach ... capacityof the worst-case realization within the uncertainty set, in single and multiuser rank-one Ricean MIMO channels wasanalyzed (see also [29]). It was also shown that beamformingis optimal for ... located at the base station and n(m)Rantennasare located at the mth mobile station. Communication takesplace in the downlink, that is, from the base station to the mobile receivers. As in...