Modeling the Distribution of Radiofrequency Intensities from the Digital Terrestrial Television (DTTV) Broadcasting Transmitters in Kampala Metropolitan; Uganda
Peter Opio *
Department of Physics, College of Natural Science, Makerere University, P.O.Box 7062, Kampala, Uganda.
Akisophel Kisolo
Department of Physics, College of Natural Science, Makerere University, P.O.Box 7062, Kampala, Uganda.
Tumps W. Ireeta
Department of Physics, College of Natural Science, Makerere University, P.O.Box 7062, Kampala, Uganda.
Willy Okullo
Department of Physics, College of Natural Science, Makerere University, P.O.Box 7062, Kampala, Uganda.
*Author to whom correspondence should be addressed.
Abstract
This study presents the modeling of the distribution of RF intensities from the Digital Terrestrial Television (DTTV) broadcasting transmitter in Kampala metropolitan. To achieve this, the performance evaluation of the different path loss propagation models and envisaging the one most suitable for Kampala metropolitan was done by comparing the path loss model values with the measured field Reference Signal Received Power (RSRP) values. The RSRP of the DTTV broadcasting transmitter were measured at operating frequencies of 526 MHz, 638 MHz, 730 MHz and 766 MHz using the Aaronia Spectran HF-6065 V4 spectrum analyzer, Aaronia AG HyperLOG 4025 Antenna at 1.5 m and 2.5 m heights, Aaronia GPS Logger, real time Aaronia MCS spectrum-analysis-software and a T430s Lenovo Laptop. On comparing the measured path loss values with the various path loss prediction model values, results showed that Egli and Davidson models are the most accurate and reliable path loss prediction models for the distribution of DTTV RF intensities in Kampala metropolitan, since their Root Mean Square Error values were the least for both routes.
Keywords: Radiofrequency intensities, path loss, empirical models, Reference Signal Received Power (RSRP), Root Mean Square Error (RMSE).