A new receive antenna subset selection algorithm with low complexity for wireless Multi-ple-Input Multiple-Output (MIMO) systems is proposed,which is based on the orthogonal compo-nents of the channel matrix. Larger capacity is achieved compared with the existing antenna selec-tion methods. Simulation results of quasi-static flat fading channel demonstrate the significant per-formance of the proposed selection algorithm. A new receive antenna subset selection algorithm with low complexity for wireless Multi-ple-Input Multiple-Output (MIMO) systems is proposed, which is based on the orthogonal compo- nents of the channel matrix. Larger capacity is achieved with the existing antenna selec-tion methods. Simulation results of quasi-static flat fading channel demonstrate the significant per-formance of the proposed selection algorithm.