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The accurate path loss models for cellular communications can help network engineers to estimate system design parameters such as base station height, antenna gain, downtilt angle, radiated power, and cell radius. Indeed, considering the appropriate path loss model in the design stage for a certain city is very important to avoid any unexpected problems after installing the system. In this paper,...
The spectrum congestion experienced in today's common cellular bands has led to research and measurements to explore the vast bandwidths available at millimeter waves (mmWaves). NYU WIRELESS conducted E-band propagation measurements for both mobile and backhaul scenarios in 2013 in the dense urban environment of New York City using a sliding correlator channel sounder, by transmitting a 400 Mega chip...
From signal measurements carried out in the 5.8 GHz band, that is reserved to unlicensed WiMAX in Brazil, this paper evaluates the signal coverage on this band in the suburban area of Tanguá. Prediction models as Hata-COST 231, SUI and UFPA (Modified SUI) were used in order to find the model that best fitted to the measurements data and then, the modified SUI model showed to be the better one.
Propagation models are used extensively in signal prediction and interference analysis. Peculiarity of these models gives rise to high prediction errors when deployed in a different environment other than the one initially built for. In this paper, we provide the error bounds on the efficacy at predicting path loss for 10 empirical widely used path loss models. The results show that no single model...
This paper proposes the prediction propagation of path loss band 2100 MHz 3G, the mobile in suburban of Thailand. The selected site is Pathum Thani province which has a few of construction. This experiment measured the signal at different distance and different direction from mobile base stations. The results from experiment will be compared with the calculating value in order to make the new empirical...
This paper addresses path loss prediction by means of Lee's model for Jiza town, south of Amman city, Jordan. Data were supplied by mobile operators in Jordan in the frequency band of 900 MHz. A calibration for Lee's model is done using ten different locations in Jiza town. The calibrated Lee's, Hata, and Egli's path loss models were compared with respect to the original collected data from mobile...
In view of designing any mobile network system, the fundamental task is to predict the coverage of the proposed system. A wide variety of approaches have been developed over the years to predict coverage using what are known as propagation models. In this paper, we compare the measured path loss obtained for the sub-urban areas with that for the rural areas and then with four propagation models, that...
Efficiency of present path loss models suffers when they are used in the environment other than for which they have been designed. The aim of this paper is to propose the predicting the path loss with the field measurement models and represent them in a more convenient form for the proposed Fuzzy Logic modeling. This paper proposes method to predict path loss for correct location of base station in...
The need of analytical methods which consider all - at least most of the - factors affecting the path loss in planing a land mobile communication system is still a challenge to dealt with. This paper addresses this issue. A simple analytical technique based on the least square method is presented. The approach follows, is to combine a number of models applicable in the same area into one. The main...
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