Ordered Group Interference Suppression for V-BLAST

Abstract—As an efficient approach to increase data rate in wireless communication, vertical Bell laboratories layered space-time (V-BLAST) has been widely studied. In this paper an improved V-BLAST decoding algorithm, ordered group interference suppression (O-GIS), is presented, which reduces the error rate by calculating the norms of sub-channels and adjusting the decoding order of antenna groups. Then O-GIS is introduced to optimize the maximum likelihood ordered serial interference cancellation (ML-OSIC) algorithm for VBLAST, resulting in improved decoding performance at the expense of acceptable computation complexity.