室内多径时延扩展的实验研究

Experimental Study on Multipath Delay Spread in Building

本文介绍关于室内环境中时延扩散的实验，实验采用基于伪随机码滑动相关法的无线信道探测器，在典型的室内环境中对ＵＨＦ（９００ＭＨｚ）无线信道功率时延曲线进行实地测量，通过对大量实测数据的处理和分析得出了一些很有价值的结论，如在ＬＯＳ及ＮＬＯＳ情况下的时延扩展均方根值和方差；时延扩散与收发距离、路径损耗及收发天线不同线极化方向的关系等等。

This paper reports the experimental study on delay spread made in typical office environment by using self made Sliding correlated spread spectrum channel sounder.Based on field measured power delay profile,some valuable results have been drawn and described in the paper,such as the cumulated distribution of delay spread in both LOS and NLOS cases;the relationship of delay spread to distance between transmitter and receiver,the relevant path loss,the polarization and directivity of antenna.