Performance Analysis of Joint Opportunistic Scheduling and Receiver Design for MIMO-SDMA Downlink
In this paper, the sum-rate performance of Joint Opportunistic Scheduling and Receiver Design (JOSRD) is analyzed for multiuser Multiple-Input-Multiple Output (MIMO) Space-Division Multiple Access (SDMA) downlink systems. In particular, the authors study linear rake receivers with selective combining, maximum ratio combining and optimal combining in which signals received from all antennas of each Mobile Terminal (MT) are linearly combined to improve the effective Signal-to-Interference-plus-Noise Ratios (SINRs). By exploiting limited feedback on the effective SINRs, the Base Station (BS) schedules simultaneous data transmission on multiple beams to the MTs with the largest effective SINRs. Using extreme value theory, the average sum-rates and their scaling laws for JOSRD are derived.