Multi-Input Multi-Output Fading Channel Equalization With Constellation Selection and Space-Time Precoders
The authors consider multiplexing systems in correlated Multiple-Input Multiple-Output (MIMO) fading channels with equal power allocated to each transmit antenna. Under several constraints, the number and subset of transmit antennas together with the transmit symbol constellations are determined assuming knowledge of the channel correlation matrices. The maximum outage data rate of the SCR receiver is seen to be close to the outage channel capacity. Identification of the channel matrix is of main concern in wireless Multiple Input Multiple Output (MIMO) systems. To maximize the SNR, the best way to utilize a MIMO system is to communicate on the top singular vectors of the channel matrix.