Date Added: Jan 2010
The advent of Multiple-Input Multiple-Output (MIMO) wireless communications has promoted the concept of high bandwidth wireless systems employing large numbers of antenna elements at the transmit and receive ends of the wireless link. To accommodate user mobility, a great deal of interest has been devoted to closely spaced array elements and the effects of correlation for small wireless devices. Much of the wireless communication literature uses a linear, spatial model which is based upon an abstraction of antenna elements to points in space. Authors refer to such models as point-wise models.