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The study is in continuation to the work by authors which was carried out for urban area due to the data obtained from local operator. We accomplish the modification of model by investigating the variation in pathloss between the measured and predicted values, according to the Okumura-Hata propagation model for a cell in Salalah city and then finding the missing experimental data with cubic regression.
We also verify our modified model by applying it for other cells. The mean square error MSE was calculated between measured path loss values and those predicated on basis of Okumura-Hata model for an open area.
The MSE is up to 6dB, which is an acceptable value for the signal prediction. The model gave a significant difference in an open area that allowed necessary changes to be introduced in the model. That error was minimized by subtracting the calculated MSE from the original equation of open area for Okumura-Hata model.
Modified equation was also re-verified for another cell in an open area in Oman and gave acceptable results. Theoretical simulation by Okumura Hata Model and the obtained experimental data is compared and analyzed further using a cubic regression on the set of the experimental data.
Scatter plot of the experimental data on path loss verses distance reveals a third order polynomial trend in the experimental data.
Therefore the cubic regression model was fitted using method of least squares which estimates the parameters by minimizing sum of squares of the white noise.
Sorry, we are unable to provide the full text but you may find it at the following location s:Path loss modeling is an essential factor in radio wave propagation and equipment design. This work examined the path loss model suitable for macro cell prediction for decimetric waves (UHF waves) in Ekiti State, Nigeria.
TREE LOSSES - SUMMARY For short paths through trees, excess path loss due to trees are on the order of dB/m for GHz and dB/m for 5 GHz depending on tree species.
Definition of Path Loss Path Loss - Path Loss Instructor: M. A. Ingram ECE Definition of Path Loss Path loss includes all of the lossy effects associated with distance and the interaction Path loss Determination Using Hata Model and Effect of Path loss in.
1. Progress In Electromagnetics Research C, Vol. 13, 91–, OPTIMIZATION OF HATA PROPAGATION PREDIC- TION MODEL IN SUBURBAN AREA IN MALAYSIA R. Mardeni and K. F.. Theoretical simulation by Okumura Hata Model and the obtained experimental data is compared and analyzed further using a cubic regression on the set of the experimental data.
Scatter plot of the experimental data on path loss verses distance reveals a third . determination of multipath effects as well as interference and cell calculations. These calculations lead to high therefore larger paths of propagation. determined the path loss using Okumura-Hata for Oman. This study was It is common to model large scale fading effects using a path loss model that obeys some sort of power law .