The Study Of Wireless Signal Propagation Characteristics And Outdoor Coverage Prediction Based On Lte System

The purpose of this article is to investigate the technical problems encountered in wireless network planning and optimization of the LTE system, the main point is the propagation characteristics of the wireless signal and outdoor coverage prediction. Currently, LTE system commercial and LTE phone started coming, it is very significant to research LTE wireless signal propagation and coverage prediction.The thesis is divided into three parts, that is, the advantages of LTE technology, wireless signal propagation characteristics and outdoor propagation model covering predictive analysis. About advantage of LTE technology, mainly introduced from three aspects to consider from the band, from bandwidth and from multiple access. Introducing wireless signal propagation characteristics, this part introduces the theoretical knowledge of wireless signal propagation, which relates to the diffraction losses algorithm, antenna height algorithm used outdoor propagation models, as well as SPM propagation model optimization algorithm is proposed to increase the SPM modeling of line-of-sight and non-line-of-sight and near point or far point. Coverage prediction, this part is divided into two chapters. One chapter introduces wireless signal propagation model and its correction to achieve, in this part of the principles and methods of propagation model calibration and display combined with SPM model correction effect. Another chapter is covering the application of the propagation model prediction, this part of the coverage the predicted theoretical knowledge as well as this article coverage prediction and propagation model calibration introduces coverage prediction. Which relates to the coverage of a variety of propagation models predict performance analysis.This thesis elaborated the theory of radio signal propagation, propagation model, and discusses the various parameters of wireless network coverage, and with the tools-UNet software to verify the degree of influence of various factors. After introduced the theoretical basis of wireless signal, optimize some algorithm and analyze coverage prediction.