Abstract: To improve the diversity benefit of the uplink multi-user MIMO detection, the ordered successive user cancellation (OSUC) detection and the antenna selection technique are applied. Two antenna selection criteria for OSUC detection called max-min user SINR and max-first user SINR are proposed. The selection criterion for non-OSUC detection called max-min user SINR is also proposed. The Sherman-Morrison formula is used to reduce computation complexity. Simulation results show that OSUC detection obtains only a little more diversity benefit, and antenna selection obtains almost all the diversity benefit of the full complexity system when no less than 2(P-1)+1 antennas are selected.

Key words: antenna selection, OSUC, MIMO, diversity benefit