Abstract: A lowcomplexity user selection algorithm was proposed for multicell multipleinput multipleoutput (MIMO) system employing orthogonal spacedivision multiplexing (OSDM) with outofcooperativecells interference suppression. The algorithm iteratively selects users through greedy search. In each user selection step, the user who contributes most to the average cell capacity is added to the selected user set, and the number of activated users is adaptively adjusted to maximize the average cell capacity. The simulation results show that compared with the user selection algorithm in MIMO system employing block diagonalization (BD) with outofcooperativecells interference suppression, the algorithm proposed can achieve higher average cell capacity, and support more users with the same signaltonoise raitio (SNR) and interferencetonoise raitio (INR).