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Massive MIMO is a key update of multiple-antenna technology.
It uses large no of antenna arrays.
Performs 3D beamforming and multi-user multiplexing.
Significantly improves system capacity.
In Massive MIMO an antenna Module named AAU is used.
AAU is Active Antenna Unit that has both Antenna and Radio Frequency Functions.
In traditional antenna system we have to use separate Radio function unit and antennas.
Comparison Traditional Antenna System and Massive MIMO:
We can have a pictorial view of Horizontal as well as Vertical coverage scenario of Massive MIMO for better understanding.
Horizontal Coverage Scenario:
Vertical Coverage Scenario:
Benefits of Massive MIMO:
- Massive MIMO improves cell capacity and Coverage
- Increase User Experience.
- Encourage Data Speed.
Application Area of Massive MIMO:
Squares, Stadiums and Big events:
- Precise User specific beams
- Effective Interference Control
CBD Skyscrapers:
- 3D MIMO for high floor coverage.
Stations, Shopping Malls:
- Concentrate user energy to combat propagation and penetration loss.
Dense Residential, Universities:
- Multi user MIMO to increase Cell capacity.
Main Aim of using Massive MIMO are:
Hotspot Coverage:
In Hotspot area user density is very high. Demand of data is also very high. In such scenario Massive MIMO can improve system capacity through spatial multiplexing.
By using Massive MIMO cell throughput increases and thus meet capacity demands in hotspot areas.
Tall Building Coverage:
With traditional site coverage in Tall buildings can’t satisfy as approximately vertical beam width is 7 degree.
With Massive MIMO 35 degree Vertical beam width can be achieved to cover tall buildings.
Pros and Cons of Massive MIMO:
Conclusion:
I had introduced Massive MIMO technology in my earlier blog 5G Introduction where I have mentioned that Massive MIMO is one of the 5 building Blocks of 5G.
It does not mean we have to use Massive MIMO in 5G only.
We use Massive MIMO in LTE as well as 5G technology for better data handling and improved capacity.
How Massive MIMO plays a vital role in 5G you should also read blog on
Pranabjyoti Hazarika
BE | MBA | PMP|IoT-Certified