OFDMA/TDD/MIMO System with Spatial Scheduling

In this paper, we propose OFDMA/TDD/MIMO system with spatial scheduling, showing frame structure and control procedures to achieve the proposed system. The frame structure includes all functions required for spatial scheduling in a subband of 200 kHz and in a frame time of 2.5 ms. We show that the frame structure can be a realistic solution to achieve spatial scheduling on subband basis. From the presented frame structure, about 60% of total radio resources are expected to be available for data symbol transmission. Furthermore, we estimate that data rate up to 570 Mbps can be supported on MAC layer for both uplink and downlink, under total bandwidth of 100 MHz.