With the rapid development of wireless communication technology and new services
people put forward higher demand for data transmission rate. To improve the data transmission rate
it is an efficiently and relatively convenient way to construct Massive MIMO system by increasing the number of base station antennas. This paper introduces the research progress and technicalprinciple of Massive MIMO
and analyzes the key technologies of Massive MIMO
such as channelinformation acquisition
antenna array design and low complexity transmission technology. Finally
the Massive MIMO system deployed on 4G network is evaluated from four dimensions: coverage