MIMO-MU = Multi user
- It is used only in Uplink.
- MIMO-MU does not increase the individual user’s data rate but it does offer
cell capacity gains that are similar to, or better than, those provided by
MIMO-SU. - The UE does not require the expense and power drain of two transmitters,
yet the cell still benefits from increased capacity. - The UE must be well aligned in time and power as received at the eNB.
- In UL, the UE can not transmit 2 different signal like it has only 1 amplifier. So to take benefit of the MIMO
- capabilities, the eNodeB can allocates the same radio resources to 2 UEs (PRB and sub-frame). By this way, he eNodeB boosts the capacity in UL.
What Is MU-MIMO in LTE?
MU-MIMO (Multi-User MIMO) in LTE allows the network to talk to multiple devices at the same time using the same frequency. Instead of taking turns, it serves several users in parallel by sending different data streams to each one using separate antennas.
How MU-MIMO Works
The network uses smart antenna techniques to focus each signal in a different direction. So, while you’re streaming a video, someone nearby could be downloading a file—all using the same channel without interference. Each of you gets a separate data stream from the same base station.
Benefits for You
- Better Efficiency: More users get high-speed data at once, so the network feels faster even during busy hours.
- Improved Capacity: The base station can handle more traffic without slowing down.
- Stable Performance: Even in crowded areas, you still get reliable service because the network can separate users spatially.
When It Helps Most
MU-MIMO shines in places with many users—like stadiums or city centers—where serving multiple people at once makes a big difference in performance and experience.