Transceiver design and performance evaluation of MIMO systems with forward link channel knowledge

We study multiple input multiple output (MIMO) antenna systems in a frequency selective channel with complete forward link channel knowledge based on a discrete frequency domain model. An optimal transmit and receive architecture in terms of maximizing the MIMO channel capacity is first described, followed by the practical considerations of linear pre-filter, encoder, modulation and receiver designs. Simulations focused on cases with more transmit than receive antennas demonstrate the great potential ability of such systems to exploit both the coherent array gain and the spatial multiplexing gain using a fairly simple receiver.