Description: This example of multiwall model for indoor propagation model. Click on the location of transmitter and press enter,then path loss colour map will shown in figure-This is example of multiwall model for indoor propagation model. Click on the location of transmitter and press enter,then path loss colour map will shown in figure Platform: |
Size: 32768 |
Author:chang |
Hits:
Description: 移动传播环境:理论基础分析方法和建模技术
杨大成编著 内容包括：理论分析移动传播环境所常用的概率论、随机过程及矩阵等基础知识；地球表面均匀大气中的电波传播、室外传播模型，室内无线传播及覆盖，小尺度衰落信道，标量信道建模及其仿真，矢量信道建模及其仿真等。
-Mobile communication environment: theory analysis and modeling Yang Dacheng edited include: theoretical analysis are commonly used in mobile communication environment, probability theory, stochastic processes, and basic knowledge of matrix Earth' s surface wave propagation even in the atmosphere, outdoor propagation model, indoor wireless transmission and coverage, small-scale fading channel, the scalar channel modeling and simulation, vector channel modeling and simulation. Platform: |
Size: 3700736 |
Author:鼻涕虫 |
Hits:
Description: 在3.49-3.51GHZ频段内的典型中国城市环境下，地面信号衰落仍服从经典的指数对数分布。在中度误差（σx =10.291）下，路损指数在3.1-3.7之间。半径2公里的小区内，RMS时延在3-4微秒之间；典型的办公室环境中，存在直达径时RMS时延小于0.1微秒。在城市环境中，多径现象很明显，主要由高层建筑物引起，并以簇的方式存在。在城市中低速移动条件下（接收机移动速度小于100 Km/h）某一强径的生存时间通常超过10分钟，但相对到达时间会发生滑动。单一小区内的传播环境具有一定相关性，如果存在直达径，相关性会上升到0.4-0.5。此外，室外室内的测量结果都可以证明Jake模型关于入射角分布假设的合理性。当天线间距在1个载波波长增大到10个载波波长时，天线相关性在0.05-0.4之间。
SIMO信道探测系统能够揭示B3G信道的很多特征，但不能够全面、充分的分析和评估B3G信道。在后续工作中，我们将进一步改进这个测试系统，对B3G系统作更深入的研究。
参考-Aided by a 1-Tx and 2-Rx system working in 3.5GHz frequency and 20MHz bandwidth, JSI-MTLab studied the classic B3G urban wireless propagation environment of China and the classic indoor channel propagation environment through a recent indoor and outdoor wireless propagation measurement. A new path loss exponent is proposed in such band while the general outdoor model of path loss is verified. Also, the statistic results of RMS excess delay, max excess delay and mean excess delay in both indoor and outdoor scenarios are given. The lag-time domain and time-frequency domain channel responses are analyzed. At the end, the results of correlation of different propagation environment in the singular cell and antenna correlation are given as well as the phenomenon being analyzed and explained. Platform: |
Size: 159744 |
Author:xuchen |
Hits:
Description: 无线传感器网络定位用到的无线传输模型
Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
-Wireless sensor network localization using wireless transmission model, Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
Achieve functional distance and transmission attenuation swap
~~~~~~~~~~~~~~~~~~~~~~Regular Model~~~~~~~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignalStrength=SendingPower-PathLoss
e.g, RSS=Pt-Pl(d0)-10*η*log10(dist/d0)
Pt:transmit power
pl(d0):the pass loss for a reference distance of d0
ηis the path loss exponent
above parameters are saved in ../Parameters_Of_Models.mat
dist:distance between sender and receiver(m)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
typical value:Pt=0-4dBm(max),Pl(d0)=55dB(d0=1m),η(2~4)=4(indoor,outdoor)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~Logarithmic Attenuation Model~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignal Platform: |
Size: 135168 |
Author:liangzhongfa |
Hits:
Description: A Statistical Ultra-Wideband Indoor Channel Model
and the Effects of Antenna Directivity on Path Loss
and Multipath Propagation Platform: |
Size: 336896 |
Author:KIKI |
Hits:
Description: 室内定位过程中，对数路径损耗模型理论值和拟合值的对比，可以查看拟和偏差。-In the process of indoor positioning, the logarithmic path loss model can be compared with the theoretical value and the fitting value. Platform: |
Size: 1024 |
Author:郝先生 |
Hits:
Search - indoor path loss