... receive antenna of the original Nr× Ntsystem.122 MIMO Systems, Theory and Applications MIMO Systems, Theory and Applications 98 where θL1 and φL1 are scatterer’s coordinates referring ... communication systems. Recently, Space-Time codes have also been developedto obtain transmit antenna diversity gain (Alamouti, 199 8; Caire and Shamai, 199 9; Ma and Giannakis, 2003; Tarokh et al., 199 9; ... that MIMO systems indeed offer high spectralefficiency (Foschini, 199 6; Goldsmith et al., 2003; Telatar, 199 9). It has been shown in (Tse and Viswanath, 2005) that the capacity of an Nr× NtMIMO...