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Multi-User MIMO (MU-MIMO) is one of the key features of WiFi 6. While Single-User MIMO (SU-MIMO) results in scaling of per-user throughput as a result of multi-stream transmission, its benefits are somewhat limited by the fact that most clients support either 1 or 2 spatial streams. Hence, even if an AP is capable of supporting 4 or 8 spatial streams, it can send at most 2 spatial streams to match the receiving client. MU-MIMO enables a multi-antenna AP to simultaneously communicate with multiple clients, thereby increasing system throughput.