Abstract:

Based on MMSE-SIC (Minimum Mean Square Error-Successive Interference Cancel) receiver, a fairness adjustable grouping pairing scheduling algorithm is proposed in VMIMO (Virtual Multiple Input Multiple Output) systems. This algorithm makes use of the proportional fair (PF) scheduling to select the primary user, and applies grouping as well as adjustable metric criterion designed to select the paring user. The comparison simulation results show that the scheme exploits the multiuser diversity gain, meantime, improves the service quality of the users at the cell edge. Furthermore, the tradeoff between the system throughput and user fairness can be achieved by varying an adjusting coefficient in the algorithm.

Key words: Virtual multiple input multiple output, successive interference cancellation, pairing scheduling