A Multi-Output Fair Queueing Scheduler for MIMO Systems

The antennas array in multiple-input multiple-output (MIMO)-based systems can be used to increase the data rate. Besides, many fair scheduling algorithms have been proposed for wireless networks with single antenna, single rate or multiple rates. However, a multi-output fair packet scheduler using rate selection mechanism and compensation scheme in wireless networks has not yet been designed. Therefore, we propose a multi-output fair queueing (MO-FQ) scheduler based on virtual time system which takes into account the above mentioned issues. Intensive simulation studies, considering traffic characteristics and the mobility of users, demonstrate the efficiency and adaptability to the environment of our scheduler.