SINR or SLNR: In Successive User Scheduling in MU-MIMO Broadcast Channel with Finite Rate Feedback

In this paper, an SLNR-based scheduling method is proposed in the MU-MIMO broadcast channel with finite rate feedback. In the proposed scheme, a user's leakage power to others is an important factor to determine whether the user should be selected. The sum rate of the proposed SLNR scheme and the traditional SINR-based scheme are compared with different system parameter settings. Simulation results shows that the SLNR scheme is preferred mainly in the case of larger feedback bits, lower SNR region and smaller number of active users. These observations are useful in practical system design.