Development of Sub-nano second Indoor Radio Delay Profile Measurement Technique

亚纳秒室内无线电时延分布测量技术的研制

基本信息

批准号：
10650384
负责人：
TAKEUCHU Tsutomu
金额：
$ 1.98万
依托单位：
Kyoto Sangyo University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650384/
关键词：
mobile communicaitions multipath propagation Delay Profile sub-nanao second Indoor radio propagation Digital radio communication dalays 伝搬遅延特性無線LAN 遅延時間

项目摘要

This research work has been done for the realization of ultra high resolution delay measurement (sub-nano second) for indoor radio environment which enables the high speed access in wireless LAN. However it could not attain the measuring equipment due to the difficulties in designing the logic circuit for Maximal-length code generator. The researcher will continue the research work until the accomplishment of the measuring equipment and the measurement in indoor radio environment. During the research work, the possibility of the anti-symmetric M-sequence is revealed without the loss of amplitude dynamic range in correlation output.The digital radio link simulation in indoor radio environment will be one of a target of this research work. A wireless LAN system utilizing the delay robust modulation scheme PSK-RZ and an artificial time-varying fading, Active Fading, has been proposed by the researcher and its performance has been estimated by computer simulation. A newly installed parallel virtual machine, equipped with 32 Pentium II 450MHz CPU, enables the detailed computer simulation in the whole room with the size of 15×10×3m. The results show that the proposed method can attain the bit error rate less than 1×10ィイD1-5ィエD1 in the whole room whereas the conventional method cannot. This result is obtained by the computer simulation calculating the time-varying signals with time dispersion characteristics based on complex delay profiles computed by three dimensional ray-tracing radio propagation. The result of this work, such as fine delay characteristics of indoor radio environment, will be expected to improve the computer simulation by revealing the detailed mechanism of indoor radio propagation characteristics.

这项研究工作是为了实现室内无线电环境的超高分辨率延迟测量（亚纳秒），从而实现无线局域网的高速接入，但由于设计上的困难而无法实现测量设备。研究人员将继续研究工作，直到测量设备完成并在室内无线电环境中进行测量，揭示反对称M序列的可能性。相关输出中幅度动态范围的损失。数字无线电研究人员提出了一种利用延迟鲁棒调制方案 PSK-RZ 和人工时变衰落（Active Fading）的无线 LAN 系统及其性能。通过计算机仿真估算，新安装的并行虚拟机，配备32个Pentium II 450MHz CPU，可以对整个15×10×3m的房间进行详细的计算机仿真。结果表明，该方法可以实现。在整个房间内达到低于1×10D1-5D1的误码率，而传统方法则无法获得该结果，这是通过基于三维射线计算的复杂延迟分布来计算具有时间色散特性的时变信号而获得的。 -跟踪无线电传播。这项工作的结果，例如室内无线电环境的精细延迟特性，将有望通过揭示室内无线电传播特性的详细机制来改进计算机模拟。