A low-complexity iterative receiver for multiple-input multiple-output(MIMO) bit-interleaved coded modulation(BICM) systems is proposed in this paper.In the proposed scheme

we apply lirsrar minimum mean square error(MMSE) filter in the first iteration and utilize a new low-complexity MMSE combining with soft interference cancellation(SIC) in the following iterations to suppress residual interference and noise.By adopting the strategy that the different components of the residuals and the noise are approximated by uncorrelated random variables after the SIC

the complexity of the algorithm can be greatly reduced as the matrix inversion for MMSE is not necessary.Computer simulation results confirm that the proposed scheme can achieve almost the same performance as the conventional MMSE combining with SIC with much lower complexity.