Research OnImpact Of MMW Frequency And Base Station Density On LTE System Performance

With the development of wireless mobile communication technology, especially as the innovation and the development of various new type of equipment and services, the demand of high data rate and system capacity get stronger and stronger. Hence we need to speed up the pace of the construction of the next generation of mobile communication network. By2020, the mobile communication will face the explosion of data, massive amounts links of terminals as well as ultra high traffic density. So the fifth generation mobile communication technology emerges at the right moment. Because the low frequency spectrum is becoming more and more crowded, and the millimeter wave communication (MMW) has very advantage such as large capacity, available spectrum width, people have realized the importance of the millimeter wave. More and more companies pay attention to the MMW communication.However, the propagation distance is short and the penetration loss is big of MMW communication. We need to improve the existing LTE network. At present there are two main ideas. One is to get higer gain through large-scale antenna. The other one is to reduce the distance betweentransmitterand receiverby deploy more small cells, thus improve the performance of the end users.Firstly, this paper introduces the characteristics and the development of the millimeter wave communication. Then this paper gives the millimeter wave frequency attenuation model and the curves, points out the development prospects and limitation of millimeter wave communication.Aiming at the defects of millimeter wave communication, this paper puts forward the solutions that using the dense deployment cell.Secondly, the article introduces the LTE and LTE-A system architecture and the performance evaluation methods and standards. And then we analyse the system coveragewithmillimeter wave frequency.Thirdly, we carried on the simulation with the large network simulator Axcel provided by Ericsson. We set the configuration of system parameters for Stockholm city. And then we discussed the influence on the system performance such as path loss, SINR and down link throughout because of the difference of communication frequency and network density.Finally, we summarize the full work and point out the shortage of the existing work and the direction of future work.