| 3D-MIMO technology belongs to 5G technology,which belongs to 5G technology at the present stage,and the core is the application of large-scale antenna.mimo has been a key technology since 4G td-lte standard was formed,and the multi-antenna technology has been highly praised.On the air interface of td-lte,mimo space multiplexing can improve the upload or download rate and throughput of the cell.mimo transmit diversity can improve transmission quality.3d-mimo inherits all the features of 2d-mimo.Besides the functions such as transmit diversity,spatial multiplexing and multi-user mimo,it also has advantages of uplink enhancement,vertical coverage,and large assignment gain.In addition,in the high-traffic scene,its large-scale antenna array technology is more prominent in guaranteeing multi-user communication.This paper takes zte rru as an example,and introduces the mapping relationship between RF line and port with the 3d-mimo equipment of antenna array up to 64T64 R.In this paper,the relationship between the gap rate and the spatial multiplexing flow is described in detail,and the more the multiplexing flow is,the higher the rate is and the higher the throughput of the community.In this paper,the enhanced mu-mimo based on 3d precoding technology is studied in this paper,and the 3d-mimo and 2d-mimo are compared in the community capacity simulation.The 3d-mimo has obvious advantages in capacity.Due to the large-scale antenna at 3d-mimo,uplink also enhanced by corresponding diversity reception gain,the uplink throughput,high traffic situations the average upload speed of improved accordingly.In this paper,we study 3d-mimo under the scenario of a variety of communication technology,practical application in the large stars concert security environment,due to the user,the traditional 2d-mimo overall high noise,low rate of single user,poor user perception.However,after the deployment of 3d-mimo,it not only ensures the upload and download of users,but also has more advantages than 2d-mimo. |
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