A Novel Multiuser MIMO Scheduling Technique for Limited Feedback Systems

In this paper we present a novel scheduling technique for multiuser MIMO (MU-MIMO) systems operating in Frequency Division Duplexing (FDD) mode. The presented method allows each user to send only its preferred Channel Direction (CDI) along with its achieved signal to Interference Noise Ratio (SINR). The performance gain of such method is that it selects a new user only if this user minimizes the disturbance to the beamforming optimality of the pre-selected users set, in addition this candidate user can maximize the current capacity gain of the system. Simulation results show non marginal capacity gains and more flexibility to accommodate more users in the system.