摘要
随着城市的迅速发展,密集城区的地貌环境趋向多元化和复杂化,导致传播模型校正的准确性降低、难度增加。为了提高密集城区模型校准的准确性,得到与本地传播环境相匹配的传播模型,采用环境适应分段校正法,对LTE-A系统的实际路测数据进行传播模型校正,校正结果表明,在地貌环境复杂的密集城区进行大尺度传播模型分段校正时,预测数据的误差降低了5dB,这说明分段校正后的传播模型准确性大幅提高,能够有效反映当地的传播环境。
Due to rapid development of urbanization in China,the geomorphic environment in the dense urban area is becoming more and more complex,which has decreased the accuracy of propagation model calibration and increased the difficulty of creating propagation model.In order to improve the accuracy of dense urban area model calibration and get the propagation model matching the local propagation model,this paper adopts a segmented calibration method based on environment to adjust the actual drive test data of LTE-A system.The result shows that predicted data＇s error decreased by 5 dB when proceeding large-scale propagation model segmented calibration in dense urban area with complex geomorphic environment.This indicates that propagation model became more accurate and reflects local propagation environment better after segmented calibration.
出处
《电子测量技术》
2013年第10期123-126,共4页
Electronic Measurement Technology
关键词
LTE-A
网络规划与优化
传播模型
大尺度模型校正
LTE-A system
network planning and optimization
propagation model
large-scale propagation model calibration
