Site specific prediction and measurement of indoor power delay and power azimuth spectra at 5 GHz
Site specific prediction and measurement of indoor power delay and power azimuth spectra at 5 GHz
复制标题
5 GHz 室内功率延迟和功率方位频谱的现场特定预测和测量
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. McGeehan
中科院分区：
文献类型：
--
作者：
B. Lee;C. Tan;S. Foo;A. Nix;J. McGeehan
本文描述了一种新开发的针对复杂室内环境的三维射线发射模型。该模型能够预测详细的时间和空间多径。为了调查和评估该模型的准确性，将预测与在办公环境中进行的详细测量进行了比较。功率延迟和功率方位角频谱是使用多元件 Medav 通道探测仪测量的，该探测仪在 5 GHz 频段中以 120 MHz 带宽运行。研究发现，预测精度对基站高度的精度、周围材料的介电常数以及模型中允许的反射次数很敏感。总体而言，结果表明，通过仔细的建模和良好的校准测量，可以实现良好的站点特定空间和时间多径一致性。
This paper describes a newly developed three dimensional ray launching model for complex indoor environments. The model is capable of predicting detailed temporal and spatial multipath. To investigate and evaluate the accuracy of this model, predictions are compared with detailed measurements taken in an office environment. Power delay and power azimuth spectra are measured using a multielement Medav channel sounder operating with 120 MHz of bandwidth in the 5 GHz band. Prediction accuracy was found to be sensitive to the accuracy of the basestation height, the permittivity of the surrounding materials and the number of reflections permitted in the model. Overall, the results indicate that with careful modelling and well calibrated measurements, good site specific spatial and temporal multipath agreement can be achieved.