Group Iterative Linear ZF Reciever for MIMO-OFDM Systems

In this paper, we present a new group iterative linear ZF receiver for a MIMO-OFDM system. The signals of all layers are firstly grouped and the signals in every group are detected by linear ZF detection method. The successive interference cancellation detection is applied between the different groups. Computer simulation results state the proposed algorithm achieves marked performance improvement compared to standard linear MIMO ZF detection algorithms. When convolutional encoding is applied, the proposed scheme may almost obtain the same performance of conventional ZF-VBLAST while the complexity of proposed algorithm is reduced by about 25%.