Reduced Complexity and Performance Comparison of The SISO-MMSE Receivers for MIMO Channels

An a posteriori probability (APP) detector for multiple antenna channels has presented in . It has the high advantage of providing good performance but has an NP complexity, we studied near capacity and near outage performance over multiple antenna channels thanks to optimized bit interleaved coded modulations (BICM) . We will now present a sub-optimal soft-input soft-ouput (SISO) detector based on the minimum mean square error (MMSE) criterion. Such a SISO-MMSE equalizer has been presented in the case of single antenna dispersive channel. We describe the direct application to MIMO channels and present supplementary complexity reductions. Comparison between the shifted list sphere decoder and the list sphere decoder centered on the received point. Performance comparison for equal performance - Performance comparison for equal complexity.