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Path loss measurements and channel modeling of cellular mobile communication at 900 MHz

Zakra, Yahia and Ivanek, Lubomir and Glesk, Ivan (2017) Path loss measurements and channel modeling of cellular mobile communication at 900 MHz. KSII Transactions on Internet and Information Systems. ISSN 1976-7277 (In Press)

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In this paper we present the measured and simulated path loss values in typical urban and suburban areas at GSM 900 MHz frequency band. The measurements are carried out by using a narrowband continuous wave signal which was fed to transmitter antenna with 40 dBm power. We also compare and analyze the predictions of the proposed empirical models with the measured data. Results of this paper confirmed that in urban areas the path loss estimation was influenced according to the greater distances. It was observed in the beginning of the measurement that 23 dB loss occurred after 18 meters from the measurement survey. The analysis of simulations and measurements focus on predicting the average signal strength at the receiver set at a given distance from the transmitter as well as the variability of the signal strength in a specific environment. It was noticed from the obtained results from analyzing and comparing the measured and simulated data that the differences between the measured values and the empirical models were due to existence of obstruction obstacles, reflections and scatters. Also, previous studies observed that propagation beyond corners of the buildings can be the reason of 29-33 dB attenuation of path loss values in urban area.