A Reduced Dimension VBLAST Detection Algorithm with Approximating Maximum Likelihood Performance

In MIMO system, spatial multiplexing (SM) technology indicates the essence of improving the capacity. BLAST is the typical representation of SM, especially VBLAST, which has some detection algorithm such as ML, ZF-DFE, MMSE-DFE and ML-DFE, etc. By considering the correlation of channel matrix, this paper proposed a new algorithm - HPML, which approaches maximum likelihood (ML) performance with lower complexity, and with its reduced algorithm - VML. Theory analysis and simulation results show that HPML and VML can approach ML performance and decrease complexity efficiently at the same time.