Journal of Communications
The authors propose a distributed scheduling algorithm for multi-user MIMO downlink with adaptive feedback. In this algorithm each Mobile Station (MS) selects transmission scheme, including Beam Forming (BF) and Spatial Multiplexing (SM) according to its channel state and then feeds back Channel State Information (CSI) adaptively. The Base Station (BS) receives CSI from each MS and selects user subset based on minimum spatial correlation criteria or system capacity maximization. The proposed user scheduling algorithm is carried out by MSs and BS corporately.