A Sub-6GHz Pathloss Model For 5G Cellular Network Deployment In Uganda Case Study In Makerere University.

Abstract

A new empirical path loss model for 5G Cellular Network in the sub – 6GHz band is proposed and compared with measurement results. This project studies how the efficiency of path loss models varies with changing environment. The study assesses RF signal propagation in the fifth – generation wireless outdoor environment at the low – band (450-900 GHz band). This done by evaluating the existing empirical log distance path loss model for the same 5G wireless outdoor environment based on the experimental datum sampled in the Makerere University campus in the non- Line of Sight (NLOS) setting. Furthermore, the Log – distance path loss model is considered as the path loss to distance with a Gaussian random variable, X due to the shadow fading by using linear regression. Thereafter, the path-loss exponent, n is fitted by the frequency using power function and modeled as a frequency - dependent Gaussian variable with the standard deviation, σ of X. Signals are transmitted at a power of 0.4dB at frequencies of 880.5MHz, 780MHz, 737MHz by the Hack – RF One half duplex transceiver and received by the Register Transfer Level – Software Defined Radio (RTL - SDR) The indoor environment of CEDAT new building was used to determine the white spaces. The RF Explorer and a Yagi antenna were used with monitoring software (Clear Wave) and the threshold used was -90dBm for determining white spaces. The propagation models are useful for predicting the signal attenuation or path loss between the transmitter and receiver. This path loss information is used as a controlling factor for wireless communication system performance to achieve the perfect network planning.