COMBINED RECEIVER FOR MULTI-BLOCK TRANSMISSION

We proposed a new signal transmission scheme for a multi-input multi-output (MIMO) communication system, in which the signals are encoded to span multi-block channel realizations and received by a linear equalizer followed by a maximum likelihood (ML) detector. The proposed system achieves a diversity gain proportional to the number of blocks of channels over which the signals span. The detection complexity is comparable to that of a linear receiver, with additional complexity independent of the number of antennas. A general criterion for designing the optimal precoder is presented. A design example is provided. Simulation results verify the effectiveness of such a combination.